<b>Parameter:</b></br> Input: AC120V;60Hz</br> Output: AC18V;500mA</br> Length: 197inch (500cm)</br></br> <b>Compatible:</b></br> Nest Hello Video Doorbell</br>Arlo Video Doorbell</br>Eufy Video Doorbell>/br>Simplisafe Video Doorbell</br></br> <b>Warranty:</b></br> 2 Years</br></br> <b>Package Includes:</b></br> 1 X Power Aadpter</br></br> <b>Note:Every Video Doorbell may take a few minutes to power on after wiring the power adapter,especially for the first time use,Please try to charge your video doorbell longer before use.</b>