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. Note: 1.Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 1228 hours Hope you have a pleasant shopping experience!