This product is designed for use with compatible models. Durable power solution extends battery operating time and reduces power consumption. Helps keep your Video Doorbell running efficiently. (Note: Battery must be removed from the doorbell before using this product.) Easy installation: Route the cable through the door opening and connect to your device. Setup is quick and requires no existing doorbell or additional wiring. Can be installed on most doors. Cable length is 5 meters. Compatible with Nest Hello doorbell, Arlo video doorbell, Eufy video doorbell, Simplisafe video doorbell, Zmodo Smart Greet Wi-Fi video doorbell, and other doorbells requiring an 18V adapter. Constructed with high-performance materials. Smooth, sleek design with flame-retardant, impact-resistant PC-ABC housing that is safe for household use. Power supply features anti-slip matte finish. Resists shine, oxidation, and humidity. Precision-built to strict standards with fully insulated layered winding for enhanced safety and long-term durability. See more details.