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
