Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your ALERTCAM AR125 Power Adapter. This adapter is designed to provide continuous power to compatible Arlo security cameras, eliminating the need for frequent battery changes.
Compatibility
This power adapter is specifically designed for use with the original Arlo security camera (models that use CR123A batteries).
Important: This product is NOT compatible with Arlo Pro, Arlo Pro 2, Arlo Go, Arlo Ultra, or other Arlo camera models.

The image illustrates the specific compatibility of the power adapter. It is compatible with the original Arlo camera (indicated by a green checkmark) and explicitly incompatible with Arlo Go, Arlo Pro, Arlo Pro2, and Arlo Ultra cameras (indicated by red crosses).
Package Contents
Verify that all items are present in your package:
- 2 x ALERTCAM Power Adapter with 25ft (7.5m) Cable
- 2 x CR123A Battery Dummy (pre-installed in adapter)

This image displays the typical contents of the product package. It shows two complete power adapter units, each consisting of a power brick, a 25-foot flat cable, and a blue dummy battery designed to fit into the camera's battery compartment.
Setup Instructions
Follow these steps to install the power adapter with your Arlo camera:
- Prepare the Camera: Open the battery compartment of your Arlo camera.
- Insert Dummy Battery: Insert the blue dummy battery end of the power adapter cable into the camera's battery slot. Ensure it is firmly seated.
- Close Compartment: Close the camera's battery compartment cover, ensuring the flat cable passes through the designated opening without pinching.
- Connect Cable: Connect the power adapter cable to the power brick.
- Plug In: Plug the power adapter into a standard electrical outlet.

This series of four images demonstrates the installation process. Image 1 shows opening the camera. Image 2 shows inserting the blue dummy battery. Image 3 shows closing the camera compartment with the cable exiting. Image 4 shows connecting the cable to the power adapter.
Operating Your Power Adapter
Once installed and plugged in, the ALERTCAM AR125 Power Adapter provides continuous power to your compatible Arlo camera. This eliminates the need to frequently replace or recharge CR123A batteries.
The 25-foot (7.5m) flat cable allows for flexible placement of your camera, both indoors and outdoors, even at a distance from a power source. Its flat design facilitates routing through narrow spaces like window frames or door gaps.

This image shows an Arlo camera installed high on an interior wall, with the 25-foot power cable discreetly routed along the wall and down to a power outlet. This demonstrates the extended reach and flexible installation options provided by the long cable.

This image contrasts the use of the ALERTCAM power adapter with traditional CR123A batteries. The power adapter is shown with a green checkmark, highlighting benefits like continuous power, 24-hour operation, and saving time and money. CR123A batteries are shown with a red cross, indicating drawbacks such as regular charging/changing, the need to climb to access cameras, and wasted time and money.
Maintenance
The ALERTCAM AR125 Power Adapter features a weatherproof design, making it suitable for both indoor and outdoor use. The cable and adapter are designed to withstand various weather conditions.
To ensure optimal performance and longevity:
- Periodically inspect the cable and connections for any signs of wear or damage.
- Ensure the cable is securely routed and not exposed to sharp edges or excessive tension.
- Keep the power adapter unit clean and free from debris.

An Arlo camera is depicted mounted outdoors, with raindrops visible on its surface and the connected power cable. This image highlights the weatherproof design of the power adapter and cable, suitable for outdoor environments.
Troubleshooting
If your camera is not receiving power:
- Check Connections: Ensure all cable connections are secure, including the dummy battery in the camera and the cable to the power brick.
- Verify Outlet: Test the electrical outlet with another device to confirm it is functioning correctly.
- Camera Compatibility: Double-check that your Arlo camera model is compatible with this adapter (original Arlo camera only).
- Inspect Cable: Look for any visible damage to the cable or power adapter.
Specifications
| Brand | ALERTCAM |
| Model | AR125 |
| Cable Type | Power Cable |
| Cable Length | 25 Feet (7.5 meters) |
| Connector Type | DC Barrel Plug |
| Compatible Devices | Arlo Security Camera (CR123A battery models) |
| Special Features | Waterproof, Extra Long, Flat Cable Design |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Maximum Current | 2.5 Amps |
| Maximum Voltage | 3 Volts (DC) |
| Certifications | CE, UL |
Warranty Information
Please refer to the retailer's or manufacturer's website for specific warranty terms and conditions. Typically, electronic accessories come with a limited warranty against manufacturing defects.
Customer Support
For technical assistance or product inquiries, please contact ALERTCAM customer support through their official website or the retailer where the product was purchased.