Control addressable notification modules are for use with Honeywell Silent Knight® series fire alarm control panels (FACPs).SK-Control addressable notification modules provide supervised monitoring of wiring to load devices that require an external power supply to operate, such as bells, horns, and strobes. It is capable of Class B (Styles Y) and Class A (Style Z) supervision. Upon command from the FACP, the SK-Control module will disconnect the supervision and connect the external power supply across the load device. The disconnection of the supervision provides a positive indication to the panel that the control relay actually turned on. The external power supply is always relay isolated from thesignaling line circuit (SLC) loop, so that a trouble condition on the power supply will never interfere with the rest of the system.