SR04 CO2
Radio room sensor for measuring CO2, temperature and relative humidity (optional) in residential and commercial buildings. The SR04 CO2 can be connected to EasySens® receiving actuators or gateways, which forward the information to a BMS controller.
| Measured 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) |
| Measurement 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 (IP) | IP30 according to EN 60529 |
| Cable entry | breaking points top/bottom, rear entry |
| Electrical connection | terminal block, max. 1,5 mm² |
| Ambient condition | 0..+50 °C, max. 85% rH non-condensing |
| Weight | 90 g |
| Mounting | flush-mounted on standard EU box (Ø=60 mm), screw mounted onto flat surface |
| Notes | optional with display "LCD", optional with traffic light function "TLF" |