Material ABS Brand N/A Model 806MA21 Color Black Quantity 1 Power Supply AC:100~240V / DC:15V 2A Voice Decibels 58dB Other 7-inch TFT LCD no radiation low power high-definition widescreen images Hands-free intercom function; Electronic control lock function; Monitoring outdoor view functions; Image brightness color and volume can be adjusted; The indoor ultra-thin design aluminum panels electroplating button beautiful and luxurious filling;16 polyphonic sound optional will not always hear the monotone of the doorbell; The outdoor unit with infrared night vision function easy to install wall; Machine current: less than 800mA; The call delay time: 120S