Adjustable Constant Voltage Constant Current Liquid Crystal LCD Multi-Display(PCB)
Adjustable Constant Voltage Constant Current Liquid Crystal LCD Multi-Display(PCB)
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6 months fault protection. We back all products with a 6 months guarantee.
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1. Input voltage: 6.5-36V (the input voltage is lower than 6.5V, the current accuracy is inaccurate, and the LCD display is abnormal if it is lower than 5.5V)
2. Output voltage: 1.2-32V, the default output is 5V step-down type, the output voltage can only be lower than the input voltage, and the voltage difference is more than 2V
3. Output current: It can work stably at 3.5A for a long time, and it can reach about 4.5A with fan enhanced heat dissipation (adjustable limit current can reach about 4.2-4.5A)
4. Output power: natural heat dissipation 50W (within 3.5A), plus fan to enhance heat dissipation 75W
5. Voltage display: resolution 0.05V, range 1.2-32V
6. Current display: resolution 0.005A, range 0-4.5A
7. Conversion efficiency: about 94%, depending on the voltage difference and current efficiency
8. Working current: about 30mA
9. Input reverse polarity protection: yes
10. Anti-backflow at the output: no (if charging the battery, first power on the module and then connect the battery, and ensure that the battery voltage is lower than the output voltage; if possible, connect an anti-backflow diode in series with the output positive pole)
11. Short circuit protection: yes
12. Size: about 70.5x48.4x28mm
13. Weight: about 65g
Features:
1. Crystal shell, beautiful design, good touch texture of buttons, and output voltage set by button
2. The button can control the output to turn off and on, and can set the power-on default to ON or OFF
3. LCD can display input and output voltage, output current and output power
4. The input terminal is protected against reverse connection, and the reverse connection will not burn
5. High efficiency, high current, low heat generation, constant current value can be adjusted around 0-4.5A, suitable for office power supply, high-power LED constant current drive, lithium battery charging, etc.
Function Description:
1. There are IN/OUT and ON/OFF buttons on the left side of the module: the IN/OUT button switches the display of input voltage and output voltage, long press to switch the display of output current and output power; the ON/OFF button controls the output ON or OFF, long press Press to set the default output state is ON or OFF at the next power-on
2. There are +/- two buttons on the right side of the module: + button press the output voltage to increase 0.05V, long press to continuously increase, and then long press to continuously increase 0.1V, 1V in slow steps; - button press the output voltage Decrease 0.05V, long press to continuously decrease, and then long press to continuously decrease 0.1V, 1V in slow steps
3. ADJ-I is the current setting potentiometer. Turn clockwise to increase the set current. When the load current reaches the set current, it enters the constant current state, and the CC constant current indicator (red) lights up. The OUT indicator is the output status indicator, it is on when there is voltage at the output terminal, otherwise it is off; the CHAR indicator is the charging indicator, which is on when charging, and the FULL indicator is the full indicator. If the set constant current value is 2A, charging When the current reaches below 0.2A, turn the light, the FULL indicator is on, and the CHAR indicator is off
Instructions:
1. Use as an ordinary step-down module with overcurrent protection capability
- Press the button to set the output voltage to the desired voltage value
- Rotate the ADJ-I current adjustment potentiometer counterclockwise to the end, then measure the output short-circuit current with the 10A current range of the multimeter (connect the two test leads directly to the output terminal), and adjust the ADJ-I constant current potentiometer clockwise to make the output The current reaches the overcurrent protection value you want to set. (For example, the current value displayed by the multimeter is 2A, then the current can only reach 2A when the module is used, and the red constant current indicator light is on when the current reaches 2A, otherwise the indicator light is off)
2. Use as a battery charger
- The module without constant current function cannot be used to charge the battery. Because the voltage difference between the exhausted battery and the charger is very large, the charging current is too large and the battery is damaged, so the battery should be used at the beginning. Constant current charging, when the charging reaches a certain level, it will automatically switch back to constant voltage charging
- Determine the float voltage and charging current of the battery to be recharged; (if the lithium battery parameter is 3.7V/2200mAh, then the float voltage is 4.2V, and the charging current can reach 1C, that is, 2200mA)
- Under no-load conditions, the output voltage of the button reaches the floating charge voltage; (if charging a 3.7V lithium battery, adjust the output voltage to 4.2V)
- First turn the ADJ-I current adjustment potentiometer counterclockwise to the end, then measure the output short-circuit current with the 10A current range of the multimeter (just connect the two test leads to the output terminal directly), and adjust the ADJ-I constant current potentiometer clockwise to make the output The current reaches the predetermined charging current value
- Connect the battery and charge (when setting: no battery is connected to the output terminal)
3. Used as a high-power LED constant current driver module
- Determine the operating current and operating voltage needed to drive the LED
- Under no-load conditions, press the button to set the output voltage to reach the LED working voltage
- First turn the ADJ-I current adjustment potentiometer counterclockwise to the end, then measure the output short-circuit current with the 10A current range of the multimeter (just connect the two test leads to the output terminal directly), and adjust the ADJ-I constant current potentiometer clockwise to make the output The current reaches the predetermined LED operating current
- Connect the LED, test the machine (when setting: output no-load, do not connect the LED light)
Precautions:
1. It is forbidden to short-circuit the input IN- of the module with the output OUT-, otherwise the constant current function will fail
2. Make sure that the power of the power supply is always greater than the power required by the output load. When the module is seriously hot, please reduce the power usage.
✓ FREE SHIPPING - No shipping fees charged
✓ International Delivery - Ships from our overseas warehouse
✓ Processing Time - 1-3 days handling time
✓ Estimated Delivery - 6-13 business days total
How It Works:
- Orders placed before 2:00 PM SAST (Monday-Friday) begin processing the same day
- Orders after 2:00 PM or on weekends/holidays process the next business day
- Delivered via private courier with SMS, email, and WhatsApp tracking updates
- If courier cannot reach you, order may be sent to nearest PAXI collection point
- Shipping insurance included in your product price
Customs & Duties Information:
Orders up to R2000:
✓ Delivered Duty Paid (DDP) - The price you see is the final price you pay
✓ We handle all import duties, taxes, and customs clearance fees
✓ No surprise charges upon delivery
Orders over R2000:
⚠️ You will be responsible for any import duties, taxes, and customs clearance fees upon delivery
Note: Your ID information may be required for customs clearance to ensure smooth delivery.
At PMC TechLife, we are committed to ensuring our customers are satisfied with their purchases. Our return policy is designed to be transparent, fair, and fully compliant with South African consumer protection laws, including the Consumer Protection Act (CPA) and the Electronic Communications and Transactions Act (ECTA).
We offer distinct return processes based on the reason for your return. Please read the following sections carefully to understand your rights and the procedures for returning an item.
1. Your Right to Return Defective or Faulty Goods (6-Month Warranty)
In accordance with the Consumer Protection Act, if any product you receive is defective, faulty, unsafe, or of poor quality, you have 6 months from the date of delivery to return it. In such cases, you are entitled to a full refund, a replacement, or a repair of the item, at your choice. We will cover all costs associated with the return shipping for defective items.
To be eligible for a defective goods return:
- The return must be logged within 6 months of delivery.
- The item should be returned with all parts and original packaging where possible. We understand that discovering a defect may require opening the packaging or breaking a seal; returns for defective items will be accepted even if opened.
- Our inspection must confirm the issue was a manufacturing defect and not caused by customer misuse, improper installation, or normal wear and tear.
2. Your Right to a 'Cooling-Off' Return (Change of Mind)
In line with the Electronic Communications and Transactions Act for online purchases, you have a 7-day 'cooling-off' period. If you change your mind or ordered incorrectly, you have 7 days from the date of delivery to request a return for a refund or exchange.
To be eligible for a 'change of mind' return:
- The item must be in its original, as-new, and resalable condition, unworn and unused.
- The item must be returned in its original packaging, with all original tags and accessories included. You may open the packaging to inspect the item, but it must be returned undamaged.
- The customer is responsible for the cost of return shipping.
- Important: There are no handling or restocking fees for change-of-mind returns. You will be refunded the full purchase price, as the law grants you the right to cancel "without penalty."
3. How to Start a Return
To initiate any return, please follow these steps:
- Visit our dedicated returns portal: pmctechlife.returnscenter.com.
- Enter your order number and the email address used for the purchase.
- Follow the prompts to select the item(s) you wish to return and the reason for the return.
Once your request is submitted, we will review it. If your return is accepted, we will send you instructions on how and where to send your package. Items sent back to us without first requesting and receiving authorisation will not be accepted.
4. Exceptions & Non-Returnable Items
Please note that for 'change of mind' reasons, we cannot accept returns on the following:
- Gift cards
- Custom-ordered or personalized items
- Items specified as non-returnable for hygiene reasons (e.g., roll-on products, clothing, and personal care goods).
This does not affect your statutory right to return any item (including sale items) that is defective or faulty within 6 months of delivery.
5. Specific Product Notes
- LCD Screens: To prevent damage during installation, we strongly recommend that our LCD screens are installed by a qualified professional technician. Damage caused by improper installation is not covered under the 6-month warranty for manufacturing defects. If you believe an LCD screen was faulty upon arrival, providing an invoice from a technician can help expedite the assessment of your return claim.
- Spare Parts: Spare parts products cannot be returned if they have been installed on a mobile phone and are found to be working after installation. This does not affect your rights if the part was defective upon arrival.
6. Exchanges
The fastest way to ensure you get what you want is to return the item you have following the process above. Once the return is accepted and processed, you can make a separate purchase for the new item.
7. Refunds
We will notify you once we’ve received and inspected your return and let you know if the refund was approved based on the policy conditions. If approved, we will issue the refund to your original payment method within 5-7 business days. Please note that it may take additional time for your bank or credit card company to process and post the refund to your account.
8. Cancellation Policy
You can request to cancel your order by emailing us at sales@pmcjewellery.co.za.
- Before Shipping: We can only guarantee cancellation if your order has not yet been shipped.
- After Shipping: Once an order has shipped, it cannot be cancelled. If you wish to return the order, you must wait to receive it and then initiate a return through our portal. Such returns will be treated as 'Change of Mind' returns.
You can always contact us for any return questions at our help center.
Description
Description
1. Input voltage: 6.5-36V (the input voltage is lower than 6.5V, the current accuracy is inaccurate, and the LCD display is abnormal if it is lower than 5.5V)
2. Output voltage: 1.2-32V, the default output is 5V step-down type, the output voltage can only be lower than the input voltage, and the voltage difference is more than 2V
3. Output current: It can work stably at 3.5A for a long time, and it can reach about 4.5A with fan enhanced heat dissipation (adjustable limit current can reach about 4.2-4.5A)
4. Output power: natural heat dissipation 50W (within 3.5A), plus fan to enhance heat dissipation 75W
5. Voltage display: resolution 0.05V, range 1.2-32V
6. Current display: resolution 0.005A, range 0-4.5A
7. Conversion efficiency: about 94%, depending on the voltage difference and current efficiency
8. Working current: about 30mA
9. Input reverse polarity protection: yes
10. Anti-backflow at the output: no (if charging the battery, first power on the module and then connect the battery, and ensure that the battery voltage is lower than the output voltage; if possible, connect an anti-backflow diode in series with the output positive pole)
11. Short circuit protection: yes
12. Size: about 70.5x48.4x28mm
13. Weight: about 65g
Features:
1. Crystal shell, beautiful design, good touch texture of buttons, and output voltage set by button
2. The button can control the output to turn off and on, and can set the power-on default to ON or OFF
3. LCD can display input and output voltage, output current and output power
4. The input terminal is protected against reverse connection, and the reverse connection will not burn
5. High efficiency, high current, low heat generation, constant current value can be adjusted around 0-4.5A, suitable for office power supply, high-power LED constant current drive, lithium battery charging, etc.
Function Description:
1. There are IN/OUT and ON/OFF buttons on the left side of the module: the IN/OUT button switches the display of input voltage and output voltage, long press to switch the display of output current and output power; the ON/OFF button controls the output ON or OFF, long press Press to set the default output state is ON or OFF at the next power-on
2. There are +/- two buttons on the right side of the module: + button press the output voltage to increase 0.05V, long press to continuously increase, and then long press to continuously increase 0.1V, 1V in slow steps; - button press the output voltage Decrease 0.05V, long press to continuously decrease, and then long press to continuously decrease 0.1V, 1V in slow steps
3. ADJ-I is the current setting potentiometer. Turn clockwise to increase the set current. When the load current reaches the set current, it enters the constant current state, and the CC constant current indicator (red) lights up. The OUT indicator is the output status indicator, it is on when there is voltage at the output terminal, otherwise it is off; the CHAR indicator is the charging indicator, which is on when charging, and the FULL indicator is the full indicator. If the set constant current value is 2A, charging When the current reaches below 0.2A, turn the light, the FULL indicator is on, and the CHAR indicator is off
Instructions:
1. Use as an ordinary step-down module with overcurrent protection capability
- Press the button to set the output voltage to the desired voltage value
- Rotate the ADJ-I current adjustment potentiometer counterclockwise to the end, then measure the output short-circuit current with the 10A current range of the multimeter (connect the two test leads directly to the output terminal), and adjust the ADJ-I constant current potentiometer clockwise to make the output The current reaches the overcurrent protection value you want to set. (For example, the current value displayed by the multimeter is 2A, then the current can only reach 2A when the module is used, and the red constant current indicator light is on when the current reaches 2A, otherwise the indicator light is off)
2. Use as a battery charger
- The module without constant current function cannot be used to charge the battery. Because the voltage difference between the exhausted battery and the charger is very large, the charging current is too large and the battery is damaged, so the battery should be used at the beginning. Constant current charging, when the charging reaches a certain level, it will automatically switch back to constant voltage charging
- Determine the float voltage and charging current of the battery to be recharged; (if the lithium battery parameter is 3.7V/2200mAh, then the float voltage is 4.2V, and the charging current can reach 1C, that is, 2200mA)
- Under no-load conditions, the output voltage of the button reaches the floating charge voltage; (if charging a 3.7V lithium battery, adjust the output voltage to 4.2V)
- First turn the ADJ-I current adjustment potentiometer counterclockwise to the end, then measure the output short-circuit current with the 10A current range of the multimeter (just connect the two test leads to the output terminal directly), and adjust the ADJ-I constant current potentiometer clockwise to make the output The current reaches the predetermined charging current value
- Connect the battery and charge (when setting: no battery is connected to the output terminal)
3. Used as a high-power LED constant current driver module
- Determine the operating current and operating voltage needed to drive the LED
- Under no-load conditions, press the button to set the output voltage to reach the LED working voltage
- First turn the ADJ-I current adjustment potentiometer counterclockwise to the end, then measure the output short-circuit current with the 10A current range of the multimeter (just connect the two test leads to the output terminal directly), and adjust the ADJ-I constant current potentiometer clockwise to make the output The current reaches the predetermined LED operating current
- Connect the LED, test the machine (when setting: output no-load, do not connect the LED light)
Precautions:
1. It is forbidden to short-circuit the input IN- of the module with the output OUT-, otherwise the constant current function will fail
2. Make sure that the power of the power supply is always greater than the power required by the output load. When the module is seriously hot, please reduce the power usage.
Delivery Process
Delivery Process
✓ FREE SHIPPING - No shipping fees charged
✓ International Delivery - Ships from our overseas warehouse
✓ Processing Time - 1-3 days handling time
✓ Estimated Delivery - 6-13 business days total
How It Works:
- Orders placed before 2:00 PM SAST (Monday-Friday) begin processing the same day
- Orders after 2:00 PM or on weekends/holidays process the next business day
- Delivered via private courier with SMS, email, and WhatsApp tracking updates
- If courier cannot reach you, order may be sent to nearest PAXI collection point
- Shipping insurance included in your product price
Customs & Duties Information:
Orders up to R2000:
✓ Delivered Duty Paid (DDP) - The price you see is the final price you pay
✓ We handle all import duties, taxes, and customs clearance fees
✓ No surprise charges upon delivery
Orders over R2000:
⚠️ You will be responsible for any import duties, taxes, and customs clearance fees upon delivery
Note: Your ID information may be required for customs clearance to ensure smooth delivery.
Refunds & Returns
Refunds & Returns
At PMC TechLife, we are committed to ensuring our customers are satisfied with their purchases. Our return policy is designed to be transparent, fair, and fully compliant with South African consumer protection laws, including the Consumer Protection Act (CPA) and the Electronic Communications and Transactions Act (ECTA).
We offer distinct return processes based on the reason for your return. Please read the following sections carefully to understand your rights and the procedures for returning an item.
1. Your Right to Return Defective or Faulty Goods (6-Month Warranty)
In accordance with the Consumer Protection Act, if any product you receive is defective, faulty, unsafe, or of poor quality, you have 6 months from the date of delivery to return it. In such cases, you are entitled to a full refund, a replacement, or a repair of the item, at your choice. We will cover all costs associated with the return shipping for defective items.
To be eligible for a defective goods return:
- The return must be logged within 6 months of delivery.
- The item should be returned with all parts and original packaging where possible. We understand that discovering a defect may require opening the packaging or breaking a seal; returns for defective items will be accepted even if opened.
- Our inspection must confirm the issue was a manufacturing defect and not caused by customer misuse, improper installation, or normal wear and tear.
2. Your Right to a 'Cooling-Off' Return (Change of Mind)
In line with the Electronic Communications and Transactions Act for online purchases, you have a 7-day 'cooling-off' period. If you change your mind or ordered incorrectly, you have 7 days from the date of delivery to request a return for a refund or exchange.
To be eligible for a 'change of mind' return:
- The item must be in its original, as-new, and resalable condition, unworn and unused.
- The item must be returned in its original packaging, with all original tags and accessories included. You may open the packaging to inspect the item, but it must be returned undamaged.
- The customer is responsible for the cost of return shipping.
- Important: There are no handling or restocking fees for change-of-mind returns. You will be refunded the full purchase price, as the law grants you the right to cancel "without penalty."
3. How to Start a Return
To initiate any return, please follow these steps:
- Visit our dedicated returns portal: pmctechlife.returnscenter.com.
- Enter your order number and the email address used for the purchase.
- Follow the prompts to select the item(s) you wish to return and the reason for the return.
Once your request is submitted, we will review it. If your return is accepted, we will send you instructions on how and where to send your package. Items sent back to us without first requesting and receiving authorisation will not be accepted.
4. Exceptions & Non-Returnable Items
Please note that for 'change of mind' reasons, we cannot accept returns on the following:
- Gift cards
- Custom-ordered or personalized items
- Items specified as non-returnable for hygiene reasons (e.g., roll-on products, clothing, and personal care goods).
This does not affect your statutory right to return any item (including sale items) that is defective or faulty within 6 months of delivery.
5. Specific Product Notes
- LCD Screens: To prevent damage during installation, we strongly recommend that our LCD screens are installed by a qualified professional technician. Damage caused by improper installation is not covered under the 6-month warranty for manufacturing defects. If you believe an LCD screen was faulty upon arrival, providing an invoice from a technician can help expedite the assessment of your return claim.
- Spare Parts: Spare parts products cannot be returned if they have been installed on a mobile phone and are found to be working after installation. This does not affect your rights if the part was defective upon arrival.
6. Exchanges
The fastest way to ensure you get what you want is to return the item you have following the process above. Once the return is accepted and processed, you can make a separate purchase for the new item.
7. Refunds
We will notify you once we’ve received and inspected your return and let you know if the refund was approved based on the policy conditions. If approved, we will issue the refund to your original payment method within 5-7 business days. Please note that it may take additional time for your bank or credit card company to process and post the refund to your account.
8. Cancellation Policy
You can request to cancel your order by emailing us at sales@pmcjewellery.co.za.
- Before Shipping: We can only guarantee cancellation if your order has not yet been shipped.
- After Shipping: Once an order has shipped, it cannot be cancelled. If you wish to return the order, you must wait to receive it and then initiate a return through our portal. Such returns will be treated as 'Change of Mind' returns.
You can always contact us for any return questions at our help center.
