1. Introduction
This manual provides instructions for the MDCGPower 5.5V AC DC Adapter Charger, Model MDCA4736. This power supply is designed to provide reliable power to compatible devices, specifically Panasonic KX-TG6622, KX-TG6623, and KX-TG6624 digital cordless telephones. It features a wide input voltage range and multiple safety protections.

Image 1.1: The MDCGPower 5.5V AC DC Adapter Charger is compatible with a variety of electronic products, including specific Panasonic cordless phones.
2. Safety Information
For safe operation and to prevent damage to your devices, observe the following safety guidelines:
- Compatibility: Ensure the adapter's voltage and connector type match your device's requirements before connecting. This adapter is specifically designed for 5.5V devices, such as Panasonic KX-TG6622, KX-TG6623, and KX-TG6624 digital cordless phones.
- Input Voltage: The adapter supports a worldwide input voltage range of 100-240VAC, 50/60Hz.
- Protection Features: The power supply incorporates built-in protection mechanisms against over current, over voltage, short circuits, and high temperature to safeguard connected devices.
- Environment: Use the adapter in a dry environment. Avoid exposure to water, moisture, or extreme temperatures.
- Handling: Do not disassemble, modify, or drop the adapter. Keep out of reach of children.

Image 2.1: The adapter features stable voltage output and multiple built-in safety protections.

Image 2.2: The adapter's construction includes premium copper wire and an intelligent chip for enhanced safety and stability.
3. Setup
Follow these steps to set up your MDCGPower AC DC Adapter Charger:
- Inspect the Adapter: Before use, visually inspect the adapter and its cable for any signs of damage. Do not use if damaged.
- Connect to Device: Plug the barrel connector end of the adapter cable into the power input port of your compatible device (e.g., Panasonic KX-TG6622, KX-TG6623, or KX-TG6624 digital cordless phone). Ensure a firm connection.
- Connect to Power Outlet: Insert the adapter's plug into a standard 100-240VAC wall outlet.
- Verify Power: Once connected, your device should receive power. Check your device's indicator lights or display to confirm it is powered on or charging.

Image 3.1: The adapter is designed for safe use with a wide input voltage range.
4. Operating Instructions
The MDCGPower 5.5V AC DC Adapter Charger operates automatically once connected. No user intervention is required for its basic function.
- Ensure the adapter is securely plugged into both the wall outlet and your device.
- The adapter will supply the necessary 5.5V DC power to your compatible device.
- When not in use for extended periods, it is recommended to unplug the adapter from the wall outlet.
5. Maintenance
Proper maintenance ensures the longevity and reliable performance of your adapter:
- Cleaning: Disconnect the adapter from all power sources before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents.
- Storage: Store the adapter in a cool, dry place away from direct sunlight and extreme temperatures. Avoid tightly coiling the cable to prevent damage.
- Cable Care: Do not bend or crimp the cable excessively. Avoid placing heavy objects on the cable. The cable is designed to be flexible and bending resistant.

Image 5.1: The adapter cable is designed for flexibility and resistance to bending.
6. Troubleshooting
If you encounter issues with your adapter, refer to the following troubleshooting steps:
- No Power to Device:
- Ensure the adapter is firmly plugged into a working wall outlet. Test the outlet with another device.
- Verify the barrel connector is securely inserted into your device's power input.
- Confirm your device is compatible with a 5.5V power supply and the connector type.
- Device Not Charging/Operating Correctly:
- Check if the adapter or cable shows any visible signs of damage. Discontinue use if damaged.
- Ensure the device itself is functioning correctly by testing it with its original power supply if available.
- Adapter Feels Warm: It is normal for the adapter to feel slightly warm during operation. If it becomes excessively hot or emits smoke/unusual odors, immediately unplug it from the wall outlet and discontinue use.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | MDCA4736 |
| Input Voltage | 100-240VAC, 50/60Hz |
| Output Voltage | 5.5V DC |
| Connector Type | Barrel Connector |
| Compatible Devices | Panasonic KX-TG6622, KX-TG6623, KX-TG6624 Digital Phone |
| Product Dimensions | 4 x 3 x 2 inches (approximate) |
| Item Weight | 4 ounces (approximate) |
| Color | Black |
| Manufacturer | Guangzhou Panyu Zhaohong Electronic Factory. |

Image 7.1: The adapter's compact design for convenient use and portability.
8. Warranty and Support
For warranty information or technical support, please refer to the retailer or manufacturer's official channels. Keep your purchase receipt for any warranty claims.