Technical Data Sheet Digital room unit Digital room unit RCD20 is used to control the room temperature in connection with the SELTRON heating controllers. It is characterized by a minimalistic design and a simple user interface with a large illuminated display and large keyboard. - In domestic buildings for setting and monitoring of the requested room temperature in connection with SELTRON controllers WDC, WXD, WXE, KXD and AHD. - Easy and comfortable setting with the use of a smart device (phone). - Powered by a battery that can be recharged via USB-C connector (wireless version only). - User functions PARTY, ECO, HOLIDAYS, FIREPLACE and one-time activation of DHW. - Measurement of relative humidity in the room (depending on the model). - Measurement of the air quality in the room (option). 2 - Button to turn operation ON/OFF. 3 - Button for reducing or move backward. 4 - Button for overview of information and menu entering. 5 - Button for increasing or move forward. 6 - Button =* to turn ON/OFF user functions or connecting with smart device. 7 - Button (antenna) for wireless pairing with controller.

Technical Data Sheet Digital room unit RCD20 Max. number of room units on heating controller WXD, WDC, WXE, KXD, KUD, KPD 2 Max. number of room units on compact weather compensated controller CMP, AHC, AHD 1 Wired connection with controller • Wireless connection with controller — Option of connecting an auxiliary sensor • User functions PARTY function - activation of comfort operation mode • ECO function - activation of economy operation mode • HOLIDAY function - activation of operation for longer period (holidays) • FIREPLACE function - activation of operation with parallel heating (with FIREPLACE)...

Outlined functions Selection of the operation mode You can easily and quickly select or change the operation mode on the room unit. Operation mode By pressing the button you can switch between heating and DHW, only heating or only heating of DHW or switch OFF of the heating system. With a long press of the button heating to cooling. , you may change the working mode from Powered by a rechargeable battery Battery charge The wireless model of the RCD20 room unit is powered by a rechargeable battery. Discharged battery can be charged with any charger that has USB-C connector. This saves on the cost...

Technical Data Sheet Digital room unit RCD20 Technical specification RCD20 RCD20W Wall installation or onto a flush socket Power supply Modbus, wired connection 12 V DC, bus line Wireless connection, 2.4 GHz LiPo rechargeable battery, 3.7V, Own consumption Clock accuracy Degree of protection Safety class Type of temperature sensors Housing material Permissible ambient temperature Storage temperature Product weight Packing unit +/- 1 s (24 h) at 20 °C IP 20 according to SIST EN 60529 III according to SIST EN 60730-1 RTD Murata NTC (10 kE) Electrical connection Seltron d.o.o. | Trzaska cesta 85...

Order code Room unit SELTRON RCD20, wired connection, wall installation Room unit SELTRON RCD20W, wireless connection, wall installation Older version of room unit RCD NEW model of room unit RCD RCD1 Room unit (corrector) for heating controller RCD2 Room unit for heating controller RCD20 Room unit for heating controller

February 2025. We reserve the right to make changes due to printing errors or technical modifications. Images are symbolic. Seltron d.o.o. Tržaška cesta 85 A SI-2000 Maribor Slovenia