Features:
Fashion look and touch design
Easy to install
Ultra-low power consumption design, power saving and lasting use
52 polyphonic ringtones of your choice
4 levels of optional volume adjustment
technical parameter
Working voltage AC 90~250V Working frequency 433.92 MHz +-280 KHz
Power consumption 10 mW Transmit power 0dbm
Sensitivity -110dbm Net weight 92G

Volume 10-110db Size 81*81*20mm