Silent Knight SK-4XZM — plug-in zone relay module for the SK-4 and SK-4E conventional fire alarm control panel.
An SK-4 on its own offers only panel-wide Form-C alarm, trouble and supervisory relays, so nothing dry follows an individual zone. This module supplies that: six Form-C relays, one per initiating device circuit plus system alarm and system trouble, giving door holders, dampers and HVAC shutdown a contact tied to the zone that operated. It plugs onto the main circuit board.
- Six Form-C relays: alarm zone 1, 2, 3 and 4, system alarm and system trouble
- Zone relays latch until reset; cutting the LATCH jumper makes them nonlatching and silenceable
- On-board disable switch disconnects the relays
- Mounts on main board connectors J3 and J5 or J4 and J6; any two of the three option modules may be fitted
- 4 mA standby, 8 mA in alarm
SK-4 and SK-4E only — the two-zone SK-2 takes no zone relay module. Do not order it in place of the SK-4XTM transmitter module, the SK-4XLM LED interface module for the remote annunciator, or the SK-CAC4 Class A converter.
