NP-FY200(LoRa) Smoke Detector

"Dual-light sensing technology for reducing false alarm caused by vapor Support networking applications with gateways through LoRa communication Alarm indicating buzzer, sound level ≥ 85 dB @ 3 m (A-Weighted) Support multiple alarm types: low voltage alarm, tampering alarm, maze dirty alarm Constant temperature alarm (>57℃) / Differential temperature alarm (ΔT > 8℃/min) Powered by lithium battery, 3 VDC batter CR17450, 5 years Support self-test to verify whether the device is working properly Battery uninstalled indicator Support silence (1min) locally/remotely Signal strength query mode, easy to deploy and install Operation temperature:-10°Cto 55°C(14 °F to 131 °F)"