LK Receiver 8 ICS.2 (NC)LK Receiver 8 ICS. 2 (NC) Only compatible with LK ICS2 Wired and Wireless thermostats. LK Receiver 8 ICS. 2 (NC) is used together with LK Room thermostat RF ICS. 2 (wireless) or LK Room thermostat W ICS. 2 (wired). Up to 8 LK Room thermostats ICS. 2 can be addressed to the receiver unit, wired or wireless. The unit can control up to 12 floor circuits through LK Actuator 24 V (NC). The unit has an in built 24h program for valve and pump exercising.