Product name: ADKS-4 gas detector Measures gas: oxygen, carbon monoxide, hydrogen sulfide Display error: ≤5% Response time: less than 30s Indication: LCD displays real-time data and system status LED, sound, vibration indication Alarm, fault and under-voltage working environment : Temperature: 20℃~50℃; Humidity: less than 95%RH, no condensation Working voltage: DC3.7V (lithium battery capacity 2000mAh) Charging time: 6h~8h Standby time: more than 8 hours Protection level: IP65 Size: 130x65x45mm Weight : About 0.5kg Color: Orange Material: ABS Packaging contents: 1 x Multiple gas detector Only the above packaging contents are included, other products are not included. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual item. The measurement allowance is +/-1-3cm.