The SK Monitor module provides an interface to contact devices, such as security contacts, waterflow switches, or pull stations. The SK Monitor is an addressable monitor module for use with Silent Knight IntelliKnight series fire alarm control panels FACPs . The SK Monitor is intended for use in intelligent, two wire systems, where individual address of each module is selected using the built in rotary switches. The SK Monitor supports Class A supervised or Class B supervised wiring to the load device. Conventional 4 wire smoke detectors can be monitored for alarm and trouble conditions.