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LLM-21

Wireless board for controlling underfloor heating

LLM-21 is a radio board designed to control heating in surface heating systems (8 independent zones). Temperature controllers are connected to the board wirelessly. The actuators are connected by cable. In addition to regulating the temperature in rooms, LLM-21 also allows you to control the circulation pump and heating device.

Product features

– communication with radio controllers (LBW / LPW) using the EXTA LIFE protocol,
– installation and management using the EXTA LIFE application (cooperates with EFC-01),
– wireless extension of the NO contact (option of radio connection with the LOT-21 receiver located in a different place than the board),
– visual notification of zone activation (8 x LED),
– visual notification of pump and boiler startup,
– ability to set the delay time: pump startup, boiler startup, pump shutdown,
– cables connected to removable clamps, possibility of mounting an external ANT-01 antenna,
– hooks enabling installation with cable ties.

Technical Data

Power supply: 230 V ~
Max. number of actuators in one heating zone: 6
Max. number of heating zones: 8
Outputs for controlling the circulation pump: 1 x NO (3A/230 V AC), voltage output
„Boiler” contact: 1 x NO/NC (6A/230 V AC) voltage-free
Operating mode: manual / automatic
Colour versions: white
Installation: surface-mounted / DIN rail / cable ties