●【 Compatible Doorbells 】: The 24 Volt transformer is compatible with WYZE Wireless Video Doorbell Pro/WYZE Video Doorbell v2. and most doorbells. ●【Easy to install】: You just need to connect the doorbell transformer to your doorbell first, and then plug the charger into the socket. It only takes a few minutes. ●【Long Cable】: The C wire power supply is 16.4ft long and can be wired in the room to charge the doorbell without the need to remove it for charging. ●【Safety】: The doorbell adapter is made of all copper cores and is a professional doorbell transformer that prevents short circuits, overvoltage, overcurrent, overheating, etc., protecting charging safety. ●【Note】: Before purchasing, please confirm that the voltage required for the doorbell matches the power supply.