Portable Formaldehyde Tester Mini PPM HTV Meter Fine Methanal Concentration Detector with LCD Display and Sound-light Alarm

The meter for PPM HTV directly measures airborne formaldehyde concentrations as well as ambient temperature. It's widely used in the following application scenarios:
Building materials and indoor air quality detection.  
Environment and Public Health inspection.
Estate and property management.
Industrial production process of formaldehyde detection, such as paint and paper manufacture.  
Hospitals, pharmaceutical and clinic formaldehyde detection.  
Tracing the formaldehyde release source in the environment.  
To assess the efficiency of hvac system.  
To assess the efficiency of formaldehyde scavenger.
  With further importance being put on air quality in public buildings, the workplace and in homes, the formaldehyde tester is aimed towards being the most accurate meter while still providing quick and simple operation  from a hand-held device.
Features:
Compact and light weight design makes it comfortable to wear.  
Large LCD dot matrix display screen, friendly and intuitive menu operation interface, battery status and alarm status.  
Displays formaldehyde concentration in both parts per million (ppm) and mg/m3.  
Displays temperature in both degrees celsius( Degrees) and degrees fahrenheit( Fahrenheit).  
Audible / visual alarms.
Bright wide-angled visual alarm bars.  
Internal vibrating alarm for high noise environments.  
User selectable alarm setpoints.
Specification:
Sampling Method: Ciffusion Type
Test Gas: Formaldehyde
Measurement range: 0~5PPM
Sampling Frequency: 1s
Response Time(T90): T90<60s
Formaldehyde Sensor:
Range: 0~5ppm as standard (0~6.7 mg/m3 at 25 Degrees)
Resolution: 0.001ppm
Accuracy: ≤0.1ppm:±20%
       >0.1ppm: ±10%
Temperature:
Range: -15~50 Degrees / 5~122 Fahrenheit
Resolution: 0.1 Degrees
Accuracy: ±1.5 Degrees                      
Environmental Temperature Measurement: -15~50 Degrees / 5~122 Fahrenheit              
Alarm Mode: sound alarm, light alarm, vibration alarm              
Alarm: Low concentration 0.1PPM alarm yellow light flashing
    High concentration 0.3PPM alarm red light flashing(alarm concentration can also be set up)                
Battery Type: 3 * AAA 1.5V Alkaline Batteries (NOT Included)
Operating Temperature: -15~50 Degrees / 5~122 Fahrenheit   
Operation Humidity: 15%~95%RH (non condensation)
Item Size: Approx. 12 * 6.5 * 2.5cm / 4.7 * 2.5 * 1.0in (L * W * H)
Item Weight: Approx. 90.8g / 3.2oz
Package Size: Approx. 22.5 * 11.1 * 5.5cm / 8.9 * 4.4 * 2.2in (L * W * H)
Package Weight: Approx. 222g / 7.8oz
Package List:
1 * Formaldehyde Detector
1 * User Manual
1 * Protection Bag