Welcome to the store! The WiFi Gas & CO Alarm Box is a 2-in-1 smart device that detects gas and carbon monoxide concentrations in the kitchen in real time. The gas concentration value can be viewed in real time via the Tuya APP. If the concentration exceeds the standard, an 80-decibel high alarm will be triggered, and the Tuya smart gas valve will be closed simultaneously, and an alarm message will be sent to the user. Product Parameter Operating Temperature -20-85°C Operating Voltage 5V Operating Current 10-496mA Power Supply Mode USB 5V/1A Communication Protocol WIFI 2.4GHZ / ZIGBEE Weight 100g CO (Carbon Monoxide) Range 0-500ppm Gas (CH4) Measurement Range 0-20% Concentrations above 4% trigger an 80-decibel alarm sound 4 - 8% Mild headache and fatigue (For reference only) 8 - 15% Headache and nausea (For reference only) 15 - 20% Dizziness, spasms, life-threatening (For reference only) Type: B: Zigbee Detector Material: plastic Color: White Package Contents: 1 * Carbon Monoxide Detector (Zigbee Detector) 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 +/- 1-3 cm. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!