Durable with power, you can extend the battery operating time and reduce power consumption. Keeping your Video Doorbell running can also help extend battery life and reduce power consumption. (Remark: Before using this product, you need to remove the battery from the doorbell). Easy installation: Go up through the door opening and just connect the cable to your ring. Installation and configuration can be done in minutes. No existing doorbell or new wiring is required and can be installed on any door. The cable length of this product is 5 m. 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. High-performance materials: This product features a flexible design with a smooth and attractive appearance. The outer case is made of flame-retardant, impact-resistant PC-ABC material, which is safe for human contact. The power supply has an anti-slip matte design. Resistant to gloss, oxidation, and humidity. Simple construction and long life: This product is manufactured in strict accordance with standards, with fully insulated layered winding for enhanced safety and durability. See more details.