1. Watching anytime anywhere if you wanna see it. No wiring,installation is extremely simple,using ultra low power technology,effective use for more than 8 months ,not only convenient,but energy saving and environmental protection. 2. The design of remote controller without screws,anti dust,continuous transmission ensures complete reception of the signal. 3. Guests can make video voice call,and record for a short video,the owner will know who in front of the door and do not need open the door. 4. The transmitter adopts the technology of no screw fitting and ultra low power wireless technology,solves the problem that the ordinary doorbell has frequently change the battery for a long time. 5. With Ding Dong Version 6. Working voltage: AC 90~250V 7. Working Frequency: 433.92 MHz ± -280 KHz 8. Power Consumption: 10 mW 9. Transmit power: 0dbm 10. Sensitivity : -110dbm 11. N.W: 92G 12. Product Size: 9.5x9.5x7cm
