[Wifi+Bluetooth Dual Mode]Connect to faster. connection speed is 3 times faster than WiFi single mode, and WIFI+Bluetooth dual mode is more stable and faster [Large screen LCD] Real-time display of gas concentration and equipment status to understand leaks [Self-test function] Automatically detect faults, and the yellow light will turn on when there is a fault. [Sound and light alarm] 90DB sound alarm and red light warning to remind the gas concentration to reach the alarm value [APP remote alarm] When the gas concentration reaches above the alarm value, the device will send out an audible and visual alarm signal and push it to the APP. [Detect temperature changes] If the set temperature value is exceeded, the device will trigger an alarm. [USB powered] USB charging does not require the purchase of batteries, the data can be updated in real time, and the data is more accurate [Multiple gas detection] Supports natural gas, biogas, and methane detection. Note that smoke detection is not supported. [Offline function] When the device is offline, the APP will remind the device to go offline after 30 minutes. [parameter] Installation : wall-mounted/ceiling Working voltage: 5V Power supply : Type-C Alarm volume: 90dB Alarm setting value (APP adjustment): 20ppm (default value) Wi-Fi standard: IEEE 802.11b/g 2.4G Detection gas: natural gas, , biogas, CH4 Application: Smart Life Notice: 1. Tuya series products do not support all devices. 2. Bluetooth is only used for network signal connection and cannot be used alone. WIFI+Bluetooth is more stable 3. This product detects biogas, natural gas, and methane. Cannot detect smoke Material: ABS colour: White Package Contents: 1 x gas detector 1 xCharging cable 1 x english manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.