TRH-3351 air quality indicator, CO2, large digital Temperature and humidity monitor Product ID: TRH-3351

Large Digital Temperature and Humidity Displays
TRH-3351 Multi monitor is a cost-effective, air quality indicator, the large single digit LED display with three most critical parameters of indoor air quality, the current CO2 concentration, the ambient temperature and the relative humidity.

CO2-----CO2 concentration indicates the amount of fresh air ventilation being introduced to a space
Relative humidity----The relative humidity in air indicates the amount of moisture
Ambient temperature----The suitable ambient temperature brings the comfortable space.

Large Digital temperature and humidity displays

CO2 & Temperature & RH Specification: 
  • CO2 Measurement Range: 0-3,000 ppm
  • Display Resolution: 1ppm at 0~1,000ppm; 5ppm at 1,001~2,000ppm; 10ppm at 2,001~3,000ppm 
  • Accuracy 0~2,000ppm: ±70 ppm or ±5% of reading, whichever is greater; over 2000ppm: +/-7% Repeatability ±20 ppm
  • Temperature Dependence Typ. ±0.2% of reading per °C or ±2 ppm per °C, whichever is greater, referenced to 25°C
  • Pressure Dependence 0.13% of reading per mm Hg
  • Response Time About 2min for 63% of step change
  • Warm-Up Time <60 seconds at 22°C Temperature
  • Temperature Range 0°C to 40°C (32°F to 104°F) display
  • Display Resolution 0.1°C (0.1°F(when temperature display is within 100°F)
  • Display Options °C/°F
  • Accuracy ±1°C(±2°F)
  • Response Time 20-30 minutes (case must equalize with environment)
  • RH Measurement Range 20%-90%
  • RH Display Resolution 1%
  • RH Accuracy ±5%RH@23°C
  • Response time <5 min for 63% of step changeOperating & Storage condition
  • Operating Temperature 0°C to 40°C (32°F to 104°F)
  • Humidity Range 0 ~ 95% RH non-condensing
  • Storage Temperature -20°C to 60°C( -4°F to 140°F)
  • Power Supply Universal 100~240VAC, 50/60Hz , External Power Brick(included in package) 
  • Power Consumption 11 Watts (Max.)