This tuya wifi gases leakage detector has clear digital display, you can see the gases concentration clearly. Detect changes in temperature, when the temperature exceeds the set value, the device will trigger a high-pitched alarm. Can detect a variety of gases, such as natural gases detection, methane, biogas detection. Built-in 6 paragraphs of voice operation prompts, such as device in self-checking, please wait, Wifi connected. And with one button muffling sound function. Tuya APP remotely control, after correctly connecting to the Tuya APP, you can achieve remotes control it wherever you are. Features: Concentration Display: Digital display design, you can see the gases concentration clearly at a glance. High Sensitive Detection: Detect changes in temperature, when the temperature exceeds the set value, the device will trigger a high-pitched alarm. Can Detect A Variety Of Gases: In addition to natural gases detection, can also detect methane, biogas detection. Breakdown Self Check: Alarm fault self-test function design, real-time automatic detection of fault, the fault indicating lamp will light up. Human Voice Alerts: Built-in 6 paragraphs of voice operation prompts, such as device in self-checking, please wait, Wifi connected. And with one button muffling sound function. 3-color Indicator Light: Green light indicates normal detection, the yellow light indicates out of order, and red light indicates leak alarm. Tuya Wifi Cellphone APP Control: APP remotely control, after correctly connecting to the Tuya APP, you can achieve remotes control it wherever you are. Specifications: Name: Gases Leakage Tester Material: plastics Item size: 91 * 91 * 28mm / 3.58 * 3.58 * 1.10in Package size: 105 * 100 * 29mm / 4.13 * 3.94 * 1.14in Package weight: 100g / 3.53ounce Packing List: 1 * Gases Leakage Tester