300M Waterproof LED Wireless Doorbell 52 Songs Chime Door Bell SOS EU/US/UK Plug

Features Wireless door bell With alarm function Waterproof Stylish look and light touch design Easy to install Ultra low power design power saving and long lasting use 52 polyphonic ringtones 4 level optional volume adjustment 900ft maxium wireless range in the open air Push buttons max 16 Specifications Receiver Working Voltage AC 90 250VPower Consumption 10mWSensitivity 110dbmVolume 10 110dbWorking Frequency 433 92Mhz280KhzTransmit Power 0dbmColor WhiteQuantity 1pcs Doorbells Power Consumption 0 01mWModulation mode ASK OOKBattery 12V 23V alkaline batteryWorking Frequency 433 92Mhz280KhzTransmit Power 0dbmColor WhiteQuantity 1pcsPackage included 1 x Receiver1 x Doorbells1 x User Manual1 x Mounting hardwareDetail Pictures