Tuya Smart Gas Alarm WiFi Combustible Natural Gas Leakage Detector Home Security Sensor ?[Tuya Smart Gas Detector] A necessary hub to pair with smoke detectors and various smart products,the Tuya Wireless Gateway Hub is designed for comprehensive home safety ?[Real-Time Gas Leak Detection] Instantly alerts users with an on-site alarm when gas leakage levels reach the alarm threshold,while also sending notification alerts to connected smartphones ? [App Push Notifications and Control] Compatible with Smart Life and Tuya apps,the device can detect gas or smoke-related hazards,promptly notifying users on their smartphone for real-time awareness and response ?[Easy Installation and Broad Application] Widely used in traditional fire prevention systems,it is also effective for air leak prevention,acting as a real-time visual and audible alarm system for whole-home safety ?[Real-Time Gas Concentration Display] View the real-time gas concentration values via the Tuya app,offering a clear and immediate understanding of gas levels Specifications: ?Operating Temperature: -20?? to 85?? ?Operating Voltage: 5V ?Operating Current: 10-496mA ?Size: 100 x 100 x 3mm ?Power Supply: USB 5V/1A ?Material: ABS ?Weight: 120g ?Measurement Range: 0-20% LEL (concentrations above the LEL threshold trigger an 80 dB alarm) ?Reference Levels: ?4-8% LEL: Mild headache,fatigue ?8-15% LEL: Headache,nausea ?15-20% LEL: Dizziness,seizures,life-threatening Package included: ?1 x Natural Gas Leakage Detector ?1 x Charging Cable ?1 x English User Manual