Smoke Alarm Remote Fire Smoke Detector A500 Wireless 433 1. Working voltage: DC9V 2. Detection angle: 3603. Detection distance: 150 meters 4. Transmission frequency: 433MHZ 5. Working voltage: 3V 6. Standby current: 5uA 7. Alarm current: 600mA 8. Battery specification: 2 AAA batteries (not included) 9. Alarm sound: 85dB (within 15cm) 10. Scope of application: family, hot, factory, apartment, shopping mall 11. Installation method: SMT 12. Launch distance: 200 meters 13. distance: 12 mm 14. Wi-Fi: IEEE 802.11 b/g/n 2.4G 15. 433 transmission: RF433. 9216. The WIFI mod can be notified remoty. When a fire smoke is detected, an alarm will sound and a notification will be made through the mobile APP 17. Use 2 AA batteries (not included) for power supply, long battery life 18. 360-degree all-round detection, instant trigger alarm 19. One-button sf-test/silence, check whether it works normally, and can canc the alarm when the alarm occurs 20. High volume alarm, up to 85dB when alarmingBattery undervoltage alarm prompt, when the battery voltage is lower than the rated value, the transmission APP reminds the user to replace the battery 21. Rotating and detachable top cover design, convenient for on-site cleaning and battery replacement