Easy to Use: This doorbell camera transformer can be easily disassembled and assembled, and can be set up in minutes. The power supply can be plugged directly into your doorbell, just connect the power cord to the two rings on the back of the doorbell, no need to connect line or other devices. Applicable to: Compatible with all versions of Ring Doorbell, other doorbell cameras or ringtones, which can extend battery working time, reduce power and provide enough power. Convenient Design: Our doorbell power adapter features overload protection, overcurrent protection, anti-start shock, anti-electronic interference, and is not easy to damage. The adapter cable has a length of 10 m (393inch), so you can easily plug it into the socket inside and outside without worrying about the distance. High Quality Materials: Made of environmentally friendly materials, with good conductivity, transmission stability and durability, the doorbell transformer is safe and when used, bringing convenience to your life. Note: When using the AC adapter, please remove the battery. Input voltage: 230V AC 50Hz, output voltage: 18VAC 500mA, output power: 9W. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on color:Black Material:plastic Voltage: AC230V Package Contents: 4 x AC Doorbell Power Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.