✔ NO MESSY WIRING - The Wasserstein Power Supply Adapter compatible with Nest Hello Video Doorbell, eufy Security Doorbell, and Arlo Doorbell lets you establish a direct connection between your video doorbell and the electrical outlet without leaving a messy wiring. This power adapter allows your video doorbell to operate at full capacity. With a 1.5m cable, it can access any electrical outlets in your home.✔ SAFE AND SECURE - Our Power Supply Adapter provides secure and uninterrupted power supply. Its special electronics protect your Nest Hello from short-circuiting and overpowering. It is built with high-grade, rugged materials.✔ EASY INSTALLATION - Installation is as easy as 1-2-3. There’s no need for any complex wiring or a technician to do the connection. It has fork terminals which secure the connection between the device and the adapter. Just simply connect the two fork terminals to the screws at the back of the doorbell and plug the adapter into an electrical outlet.✔ WASSERSTEIN 3 MONTHS WARRANTY - If any of our products fail to meet your expectations, please get in touch with us and we will try to resolve the issue. If we can't resolve the problem to your satisfaction, you will get a full refund or replacement - no questions asked.