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 that require an 18V adapter. High performance materials: This product is flexible in design and has a smooth, attractive appearance. The outer case is made of flame retardant, impact-resistant PC-ABC material, which is safe for human contact. The power supply features an anti-slip matte design. Offers strong resistance to gloss, oxidation, and humidity. Simple construction and long life: This product is manufactured in strict accordance with standards, with fully insulated layered winding to enhance safety and durability. See more details.