1. Operating voltage: AC 100-230V | 6. Wireless distance: 200 meters (open area) | |||||||||
2. IP44 Transmitter: 3V lithium cell CR2032/CR2025 | 7. Receiver size: L118×W66×H30mm | |||||||||
3. Wireless frequency: 433 MHz | 8. Transmitter size:L95×W45×H16mm | |||||||||
4. Sound: 38 melodies | 9. Operating temperature: -40°C~+45°C | |||||||||
5. Ringtone volume ≥50dB/1m, four levels of volume |