Q188-WW Intelligent Wireless Remote Control Waterproof Doorbell Pager with 45 Chord Music, US Plug/UK Plug/EU Plug

Receiver: 1. Voltage range: AC 85V-260V power supply 2. Working temperature: -20-55 degrees Celsius 3. Ringtones: 45 polyphonic music 4. Size: 85x65x23mm 5. Volume: 0-110 decibels (4 levels of volume can be adjusted) 6. Receiving distance: 300 meters in a straight line 7. Working frequency: 433.92MHZ Launcher: 1. Voltage range: 12V23A battery power supply 2. Working temperature: -20-65 degrees Celsius 3. Receiving distance: 300 meters in a straight line 4. Waterproof rating: IP44 5. Size: 77x50x16mm 6. Working frequency: 433.92MHZ