Product parameters: 1. Working voltage: 9V. 2. Standby current: less than or equal to 10 microamps. 3. Alarm current: less than or equal to 65mA. 4. Detection distance: 10m. 5. Transmission distance: 100m. 6. Alarm indication: red LED. 7. Installation: wall-mounted. 8. Scope of application: family, shops, office buildings, warehouses, etc. 9. Working temperature: 0-60 degrees Celsius. 10. Operating humidity: 0-80% RH (no condensation).