ActronAir WRECMF2 Multi Function PCB Kit is a replacement PCB kit for compatible ActronAir WRE series wall split indoor units, providing the combined control functions required for indoor unit operation. Confirm compatibility against the unit service documentation before ordering — WRECMF1 and WRECMF2 suit different WRE series indoor unit configurations. Isolate power at mains before replacement -- live work on electrical components is dangerous and must only be performed by a qualified technician.