The Ten Input Monitor module provides an interface between a control panel and normally open contact devices such as pull stations, security contacts, or flow switches.

M501 mini monitor modules provide a 2-wire initiating circuit for normally open contact fire alarm and security devices.

SMB500 surface-mount boxes are for use with System Sensor® modules when flush or recessed mounting is not possible.

System Sensor multiple input and output modules are designed to meet a range of applications in which numerous single modules are used.