baby monitor,child monitor,baby cry detector,sound activated,use battery,50-80M remote distance,alarm crying sound,factory offer ... baby monitor,child monitor,baby cry detector,sound activated,use battery,50-80M remote distance,alarm crying sound,factory offerSPECIFICATIONS ... sound baby crying voice.Quite sensitive.•Loud Volume:85-95dB;•Use 2 "AAA" battery for Remote Transmitter(battery excluded ...