Carbon Monoxide Detectors Portable Temperature Detector/Humidity Sensor/Air Quality Meter Smoke CO Gas Monitor [3 in 1] Alarm for Home Bedroom Office in-car Camping Indoor Outdoor

SKU: GW40.0007

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Our CO detector is NDIR working method: [CO ppm: 0-100, Green indicator light and smile emoji show]; [CO ppm: 100-200, Yellow indicator light and expressionless emoji show warning]; [CO ppm: 200-500, Red indicator light and sad emoji show with trill Alarm]." 
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Yes, it is built-in a hidden kickstand, it is convenient to put it on the desk 
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Our detector is [3 in 1] Temperature Detector/ Humidity Sensor / CO smoke Detector, one pay, three functions getting. 
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No, you don't need to buy battery, this 3in1 carbon monoxide detector is built-in high capacity 2400mAh battery, it can Continue working 90 hours with full power. 
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Our detector is Carbon monoxide detector, it is 3in1 design: Temperature Detector/ Humidity Sensor / CO Smoke Detector. 
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Yes, this portable carbon monoxide detector has a hole on the top, so we can use lanyard to hang it to the wall 
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This carbon monoxide detector has engery-save mode, pls click the ""B"" buttom, the screen backgroud light will be off, the information still shows clearly on the screen. 
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Yes, our detector is suitable for any cars include RV, this carbon monoxide has kickstand and lanyard hole, we can keep it stand and hang it by lanyard. 
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Co detector air quality and gas detector plus smoke alarm.