Vehicle Air Warning Monitor, The world's advanced NDIR(non-dispersive infrared sensor technology) is used to monitor CO,CO2, temperature, humidity,atmospheric pressure and altitude in the vehicle, and give early warning of exceeding the standard. It provides effective technical support for the monitoring, early warning and regulation of the air in types of vehicles, which can detect the crisis in time and provide safe driving for the vehicle users. It can be installed on private cars, taxis, trucks, school buses, online car-hailing cars, official cars, buses, heavy machinery vehicles, emergency vehicles, sprinklers and trucks Pull a special car. It achieves real-time monitoring, long-term alarm for exceeding the standard, and protects safety. Equipped with 3200mAh capacity battery and BT, support 24 hours real time monitoring, easy to carry outdoors. To the accuracy of detection, let the device stand for 10 minutes. If it is required to work in a confined space, it should be placed in a ventilated environment for 24 hours for automatic calibration. Manual calibration can also be .To the service life of the product, please do not place the product in an environment with poor air quality for a long time. Do not expose the product to extreme environments such as high or low temperatures. This product is not protected against rain. Please use it in normal environment. Knock, bump, or disassembly of the product may result in inaccurate detection. Please keep it safe. Item Name: Vehicle air warning intelligent terminal Model: PT04 Real-Time 6 in 1 Detector: CO+CO2+Air Pressure+Altitude+Temp+Humidity Backlight Adjustment: Support CO2 Measurement Range: 400-5000PPM Resolution: 1PPM CO2 Measurement Accuracy: 50PPM or 5% of reading CO Measurement Range: 0-1000PPM Resolution: 1PPM CO Measurement Accuracy: 10PPM or 5% of reading Temperature Units: Celsius and Fahrenheit Temperature Measurement Range: -10C to 60C/14F to 140F; 2C/35.6F. Humidity Measurement Range: 5% to 95%; 5%. Atmospheric Pressure Range: 300-1100hPa Relative Accuracy(950-1050hPa@ 25C): 0.12hPa Absolute Accuracy(950-1050hPa@0- 40C): 1hPa Altitude: +9000/-500m/+29527/-1640ft (Above/ sea level) Sound Level: 85dB () Working Temperature: 0 C to 50 C/32F to 122F Working Humidity: 0-95% (non-condensing) Input Voltage: DC 5V/2A Built-in Battery Capacity: 3200mAh Memory card type: -SD card (Not included in the package) Memory card capacity: 128MB Weight: .370g/13.05oz Appearance Size: .11 x 9 x 4CM/4.33 x 3.54 x 1.57inch With LCD Screen Or Not: Yes : Paint & Decorating color:White Material:plastic Package Contents: 1 x 6 IN 1 Air Quality Monitor 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.