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VOC Monitor / Controller

Sensors/ arrow VOC Monitor / Controller

VOC Monitor / Controller

Our VOC (Volatile Organic Compounds: including cigarette smoke, formaldehyde, toluene, ethanol, ammonia, hydrogen sulphide, sulphur dioxide, natural gas, alcohol, carbon monoxide, body odour) monitor and controller provides valuable information on air quality and gives an indication of when ventilation is required.  Ideal for assessing ventilation adequacy in Passive Haus buildings and other air tight building standards, maintaining good ventilation rates in Schools and Offices and controlling ventilation equipment with the aim of reducing unnecessary ventilation and associated heat loss.
This neat wall mounted unit displays VOC levels as well as temperature and humidity - the LCD display is backlight by 3 colour LEDs to give you a clear indication of ventilation requirements.  The LCD displays GREEN when VOC concentrations are GOOD, YELLOW when VOC concentrations are less than ideal and RED when VOC levels are too high.  These set point VOC levels can be adjusted at the time of ordering:

The defaults are: Green  (optimal)


Yellow (moderate) 12.1 - 20.0 ppm  


Red  (poor) > 20.1 ppm

You can set the unit to switch an extract fan or other device when the VOC concentration reaches a certain level - the set point level for this switch is controlled via an on-board dip switch that can be set at the time of installation.  The set point options are: 13ppm, 15ppm (default), 18ppm and 20ppm. A touch switch on the front of the unit allows you to override the relay to give you extra control - the touch switch allows the following: Automatic control with Alarm, Automatic control without Alarm, Always ON & Always OFF.  The audible alarm is available to sound when the VOC level rises above 20ppm (the alarm set point can be changed at the time of ordering and can also be fully disabled if so desired).


VOC Sensor: Semiconductor - long working life and good stability.
Temperature Sensor: NTC 5K
Humidity Sensor: HS capacitive Sensor
Power Supply: 220V-240V AC @ 50/60HZ
Power Consumption: 2.8W
Warm Up Time: 72 hours (first time) & 10 minutes (normal operation)
Display Resolution: 0.1 ppm
VOC Measurement Range: 0-30ppm
Temperature Measurement Range: 0-50°C
Humidity Measurement Range: 0-99% RH
LCD Backlight: Green, Yellow, Red
Sound Alarm: At set point VOC level of 20ppm (can be changed or disabled)
Control Switch: By relay with 3Amp maximum load at 220V
Operation conditions: -20°C ~ 60°C  0~95% RH
Storage conditions: -40°C ~ 90°C  5~95% RH
Net Weight: 190g
Dimensions: 130mm (height) x 85mm (width) x 36.5mm (depth)
Mounting: Wall mount with back plate
Wiring: 1.5mm2
Housing: PC/ABS fire-proof enclosure to IP30 protection.
Certification: CE
Number pieces in packaging:1

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