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Thermokon · Air quality sensor · EnOcean

SR04 CO2 EnOcean

Name: SR04 CO2 EnOcean
Brand: Thermokon

Wireless EnOcean room sensor for CO2 and temperature, with optional humidity, an LCD and a traffic light air quality display.

Availability and lead time confirmed on your quote

Display: LCD and traffic light LEDs

Measures: Temperature, CO2

Part number630634

Quotes answered within 24 hours, no account needed
DHL, under 15 kg £13.50 ex VAT
Technical support from the people who commission it

Specification

Communication

Protocol: EnOcean (IEC 14543-3-10), 868 MHz
Connection: Terminal block, max. 1.5 mm²

Electrical

Power supply: 15 to 24 V DC (+/-10%) or 24 V AC (+/-10%)
Power consumption: max. 1.6 W (24 V DC), 3.6 VA (24 V AC)

Environment

Operating temperature: 0 to +50 °C
Humidity: max. 85% rH, non-condensing
Protection: IP30 IP rating

Performance

Sensor element: NDIR (CO2)
Measuring range: CO2 0 to 2550 ppm, humidity 0 to 100% rH (temp_rH versions), temperature 0 to +51 °C output scaling
Accuracy: Temperature +/-1% of measuring range, humidity +/-3% rH at 20 to 80% rH, CO2 +/-75 ppm or +/-10% above 750 ppm, all typical at 21 °C

Physical

Housing material: PC
Colour: Pure white
Mounting: Flush on EU box (60 mm), or surface mounted with adhesive foil or screws
Dimensions: 85 x 85 x 25 mm
Weight: 90 g

Part numbers

From the manufacturer's datasheet for SR04 CO2 EnOcean.

Overview

The SR04 CO2 is a wireless room sensor for CO2, temperature and, on some versions, relative humidity in homes and commercial buildings. It sends EnOcean telegrams to EasySens receiving actuators or gateways, which pass the values to a BMS controller. The CO2 element is NDIR with dual channel self-calibration. Versions are available with a 29 x 12 mm LCD, with three LEDs that show air quality as a traffic light, or with both. It runs from 15 to 24 V DC or 24 V AC and mounts on a standard EU box or on the surface. The free airConfig software, with an EnOcean USB stick, is used for configuration.