WL-TEMP-RH-CO2 2.1

Wireless temperature and humidity sensor with CO2 measuring. Needs outer power source.
– Sensor can be used with 5 VDC power supply and it can be a repeater.
– The CO2 measurement is self-calibrated, and its setting time is 1–3 weeks.
– During the first calibration period of 1–3 weeks, the sensor must be continuously connected to a power supply. After this, the calibration value is saved in the non-volatile memory.
– Self-calibration is carried out continuously as long as the sensor is connected to a power supply.
– During the first start-up, after 10 minutes, the sensor will set itself at the value of 650 ppm, which corresponds with high-quality indoor air in a room with a few people. At this stage, the sensor reliably measures any changes in CO2 concentrations, while the absolute measurement value may not be fully accurate.
– The self-calibration of the CO2 sensor is based on a daily minimum value, which the sensor assumes to be the level of fresh air. This is why the sensor is not suitable for applications where it is used 24/7.
– Room sensor has temperature and humidity measurement and also ”AUX-screw connector”. NTC10, ON/OFF state, transmitter or water leak sensor 0..100% can be connected to AUX- screw connector.
– Operating frequency 869MHz (6LoWPAN technology)