Power Supply Mode：4pcs Alkaline AAA batteries
Standby：More than 1 year
1*Screws and fixtures
The doorbell needs 4pcs Alkaline AAA batteries (not included).
Please make sure the wall is clean before installing.
Product instructions in the product packaging back
Compatibility: iPhone 3GS, iPhone 4, iPhone 4S and iPhone 5, iPod touch (4th and 5th generation) iPad can run iPhone version of the application, Android smartphone, most Android tablet, BlackBerry, Windows and other devices
2.4GWiFi mobile phone connection, so you catch the visitors long distance, and will be recorded in your free cloud storage and mobile phones, easy to view later
The receiver has a variety of music prompts to switch, you can freely switch your favorite ringtones, protect your family from noise interference
Install the doorbell (requires the battery) on the door frame (the package contains the screws and the fixed frame), the room plugged in the receiver, press the doorbell light flashes
4pcs Alkaline AAA batteries Standby time up to 1 year, ultra-low power, no wires, plug and play
Signal stability, can be separated from the wall to reach 30-50 meters, so that you can be in any corner of the home visitors can receive the image