Portable air quality tester: CO carbon monoxide detector with configurable alarm from 0 to 1000ppm

This portable carbon monoxide (CO) gas detector can continuously measure and/or monitor the concentration of CO gas in the environment. When the gas concentration reaches the alert level, the alarm is triggered.
Specifications:
Sensor type: Specific stabilized electrochemical gas (CO).
Exclusive detection of carbon monoxide (CO) gas.
Temperature measurement in Celsius or Fahrenheit.
Display unit: CO in parts per million (ppm), Temperature in degrees C or F.
Measurement ranges: CO 0 to 1000PPM, Temperature 0 to 50 degrees (C).
Resolution: CO 1PPM, Temperature 0.1C.
Precision: CO:±5% or ±10PPM, Temperature: ±1.5C.
Audible and luminous warning.
Adjustable warning point (default 24PPM).
Runs on 3 AAA 1.5V alkaline batteries not included.
Operating temperature: 0 to 40°C, Relative humidity 1% to 99%.
Storage temperature: -30 to 60°C, Relative humidity: 1% to 99%.
Article size: 13.5*5*3.5cm.
Article weight: 115g.