Energy-harvesting wireless room sensor for measuring temperature and relative humidity in residential and commercial buildings. The SR04 rH transmits its measured values to compatible EasySens® receiving actuators or gateways, which forward the information to a BMS controller.

Measured valueshumidity, temperature
Radio technologyEnOcean (IEC 14543-3-10)
Frequency868 MHz, optional:, 902 MHz (Americas), 928 MHz
Power supplysolar cell, internal super cap, maintenance-free, optional: backup battery LS14250 (3,6 V)
Measuring range temp.0..+40 °C
Measuring range humidity0..100% rH non-condensing
Accuracy temperature±0,4 K (typ. at 21 °C)
Accuracy humidity±5% between 30..70% rH (typ. at 21 °C)
Measurement intervalWakeUp time = 100 sec. (default)
Transmission intervalevery 100 sec. at change >0,8 K or >1,6% rH, otherwise every 1000 sec., adjustable via jumper
EnclosurePC, pure white
Protection (IP)IP30 according to EN 60529
Ambient condition0..+40 °C, max. 85% rH non-condensing
Weight50 g
Mountingto be mounted flat onto the surface using adhesive foil (included) or screws
Delivery contentadhesive foil
Notesintegrated battery backup possibility for usage in dimly lit rooms, for devices with operating elements please refer to product SR04 x
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Thermokon Sensortechnik GmbH
Platanenweg 1
35756 Mittenaar
Tel.: +49 2778 6960-0


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