Durable with power efficiency, this product helps extend battery operating time and reduce power consumption. Keeping your video doorbell powered can help maintain performance and battery life. (Note: Before using this product, remove the battery from the doorbell.) Easy installation: Route the cable through the door opening and connect it to your ring. Setup can be completed in minutes. No existing doorbell or additional wiring is required, and it can be installed on most doors. The 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 that require an 18V adapter. High-performance materials: Designed for flexibility and smooth appearance. The outer case is made of flame-retardant, impact-resistant PC-ABC material, safe for human contact. The power supply features an anti-slip matte design. Resistant to glare, oxidation, and humidity. Simple construction with long-lasting durability. Manufactured to strict standards with fully insulated layered winding for enhanced safety and reliability. See more details.