Product Name: ADKS-4 Gas Detector Measuring gas: oxygen carbon monoxide hydrogen sulfide Display error: less than equal 5% Response time: TLess than 30s Indication : LCD displays real-time data and system status LED, sound, vibration to indicate alarm, fault and undervoltage working environment: Temperature: 20Celsius~50Celsius; Humidity: Less than 95%RH without condensation Working voltage: DC3.7V (Lithium battery capacity 2000mAh) Charging time: 6h~8h Standby time: more than 8 hours Protection class: IP65 Size: 130x65x45mm Weight: about 0.5kg Colour:orange Material: ABS Package Contents: 1 x Multi Gas Detector 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. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!