SR04 CO2

Radio room sensor for measuring CO2 content, temperature and relative humidity (optionally) in living and office spaces. The device to be mounted via adhesive pad or screws sends its measured values unidirectionally to corresponding receivers or gateways, which process the information directly or – depending on the application – forward it to a central control unit.

Measuring values CO2, temperature, humidity, depending on the device
Radio technology EnOcean (IEC 14543-3-10)
Frequency 868 MHz, optional:, 902 MHz (Americas)
Power supply 15..24 V = (±10%) or 24 V ~ (±10%) SELV
Power consumption max. 1,5 W (24 V =) | 3,6 VA (24 V ~)
Measuring range temp. 0..+51 °C
Measuring range humidity 0..100% rH non-condensing
Measuring range CO2 0..2550 ppm
Accuracy temperature ±1% of measuring range (typ. at 21 °C)
Accuracy humidity ±3% between 20..80% rH (typ. at 21 °C)
Accuracy CO2 ±75 ppm, >750 ppm: ±10% (typ. at 21 °C, 1015 hPa)
Measuring interval WakeUp time = 100 sec. (default)
Calibration self-calibration, Dual Channel
Display LCD 29x12 mm, monochrome, optional, 3 LEDs indicating air quality (CO2, traffic light function ‘TLF’), optional
Enclosure PC, pure white
Protection IP30 according to EN 60529
Cable entry breaking points top/bottom, rear entry
Connection electrical terminal block, max. 1,5 mm²
Ambient condition 0..+50 °C, max. 85% rH non-condensing
Weight 90 g
Mounting surface mounted on flush-mounting box (Ø=60 mm), screw mounted onto flat surface
Notes optional with display "LCD", optional with traffic light function "TLF"

Contact us:

Thermokon Sensortechnik GmbH
Platanenweg 1
35756 Mittenaar
Tel.: +49 2778 6960-0

Write email

View contact