extend your senses
WRU90001 - Wireless room unit for measuring temperature, humidity, CO2 sensor

WRU90001 - Wireless room unit for measuring temperature, humidity, CO2 sensor

WRU90001 - Wireless room unit for measuring temperature, humidity, CO2 sensor



WRU90001 is a wireless, battery powered HMI unit. The device features temperature, humidity and CO2 sensors, the values of which can be displayed to user on a large LCD display. It features a native modbus map that grants seamless integration into the DDC/SCADA system. The communication is based on the encrypted Midam KFP protocol, which allows to update the device firmware on a wireless basis. 


  • HVAC control
  • measurement of temperature, humidity and CO2
  • display of status values
  • wireless integration into SCADA control systems


The wireless room unit measures temperature and relative humidity. It allows to set the desired temperature setpoint and operating modes using the rotating knob. The values are transmitted through the 868 MHz unlicensed band to the WCOM51 gateway. There is also an option without rotating knob and display available. The room unit features a native modbus map with the direct read and write functionality. The modbus map is available in a separate document. All settings and configuration are also stored in a modbus register, directly in the device. It is necessary to pair the device before first use.

SCADA system integration

The controller can be integrated into DDC or SCADA systems directly via the WCOM51 wireless gateway.


To pair your own sensors with the WCOM51 GSM gateway, the freely downloadable KFP-Lite software is available, which communicates with the gateway using the WUSB01 wireless USB configurator. Both devices must be powered and placed in close proximity to each other. Using the search function in the software interface, you can view a list of all available devices in range and assign or modify parameters based on the wireless identification code for each individual device.

Using KFP-Lite, it is possible to change the communication frequency (default value 868.95 MHz).


Remove the base lid of the controller by gently pressing it on the sides. Remove old batteries from the bracket and place new
batteries. Observe the battery type and polarity. Always replace both bateries with fresh ones. Then put both parts together and
close the controller again.


The large LCD shows the current temperature, humidity and fancoil controller status using segment symbols, standard symbols for day and night mode, time programs and activated output. At the top of the display there are symbols indicating the day of the week. The bell symbol indicates a communication error, while the side wrench symbol indicates weak batteries.

Technické parametry

Sensor typeWRU90001
Power supply 4,5V, 3x main alkaline battery 1,5V, type AA
Consumption  idle: <10 uA, avg. typical: 90 uA, max.: 25 mA 
Battery life  up to 3 years - batteries are not supplied with the device
Communication 868,950 MHz, 100 kbps, WMBUS T1, KFP
868,300 MHz, 32 kbps, WMBUS S1, KFP
868,100 MHz, 100 kbps, KFP
869,525 MHz, 100 kbps, WMBUS C, KFP
868,300 MHz, 38 kbps, KFP 
Protocol WMBUS (EN 13757-4), KFP (dual stack)  
Encryption AES 128 PCBC, EN 13757-4 
RF power +10 to - 20 dBm, step 5 dB 
Antenna integrated 
Communication range 100 m in free space, 30 m in buildings 
Mechanical and dimensions 90 x 115  x30 mm
enclosure ABS, IP 20 in accordance with EN 60529, as amended
2 x DIP switch (INIT mode, USR mode) 
Temperature measurement range
-20 to 55 °C, ± 0,5 °C
Humidity measuring range
10 to 90 % rH, ±3% rH
Temperature setpoint
configurable, ± 10 to ± 1 K
CO2 measuring range
400 ... 5000 ppm (secondary output 0-100%)
CO2 measuring method
NDIR (Non-dispersive Infra Red)
CO2 measuring accuracy
± 30ppm, ± 3% of measured value (defined conditions for at least 3 calibration ACDL completed
over the past 3 weeks). ACDL (automatic calibration in dimming light mode).
reflexive segmented LCD 60x60 mm
Ambient conditions -5 to 45 °C, 5 % to 95 % rH (EN 60721-3-3 class 3K5) 

Note: Manufacturer reserves the right to make changes in design and technical characteristics of the products. For actual information, please always contact your dealer.

Rozměrový náčrt

Schéma zapojení


Soubory ke stažení



SENSIT s.r.o.

Školní 2610, 756 61 Rožnov pod Radhoštěm

+420 571 625 571



Receive news and product information in your email.

© Copyright 2022 SENSIT s.r.o. | Školní 2610, 756 61 Rožnov pod Radhoštěm, Czech Republic | +420 571 625 571 | 3352b78d-b2b0-4c8e-aeff-434527a9a072
All Rights Reserved. Webdesign: FlexiSystems s.r.o.: e-learning, webdesign, CMS.