Siemens XMS-S — addressable single-action manual pull station with built-in isolation, part number S54321-F7-A1.
One motion sets it off: the recessed cover pocket pulls down and locks in the alarm position until a Siemens T-45 key is turned counter-clockwise. Built-in isolation lets the station meet NFPA 72 Class X (Style 7) survivability, and it reports a maintenance trouble if left armed with the cover off during service.
- 13 to 32 VDC; polarity insensitive in non-isolation mode
- Maximum average operating current 500 µA at 24 VDC
- Tri-color LED flashes green normal, red alarm, amber trouble
- One address; up to 30 addressable devices between isolators
- Polycarbonate, 5.50" H × 4.0" W × 1.250" D; 2-1/2" deep single-gang box
- 32° to 120°F; UL 38 and ULC-S528 certified, FM approved, ADA compliant
The suffix is the whole difference: XMS-D and XMS-DA are dual-action, XMS-2S is two-stage, and XMS-M (S54321-F19-A1) is single-action in an aluminum housing. No Siemens document states that the XMS-S replaces an earlier station.
Documents
FAQ
Which Siemens panels is it compatible with?
Desigo Fire Safety Modular and Cerberus PRO Modular (via the XDLC), Desigo FC2025/FC2050/FV2025/FV2050, Cerberus PRO FC922/FC924/FV922/FV924, Desigo FC2005 and Cerberus PRO FC901.
How is it reset?
Insert the Siemens T45 key and turn it 10-15 degrees counter-clockwise; the cover returns to normal. Then reset the fire alarm panel.
How is it addressed?
With the Siemens DPU programmer through the programming holes in the rear cover, before field wiring is connected.
What box does it mount on?
A 2-1/2" deep single-gang box. The S54321-F20-A1 surface box and adapter plates for SB-5R, 4" square and 2-gang boxes are optional.
