The GSA-WTM gives one module two dedicated dry-contact inputs for waterflow and tamper monitoring, with the waterflow circuit factory-programmed to latch an alarm only after a sustained 16-second contact closure so a pressure surge doesn't trip a false alarm.
Built for the commercial fire installer
Like every module in Kidde's intelligent addressable line, the WTM sets its loop address with simple rotary switches, and its ground-fault detection pinpoints the exact module with the wiring problem instead of leaving you tracing wire back to the panel. Because the module makes its own alarm decisions on-board, existing conventional wiring usually works without a rewire.
Key features
- 16-second contact closure delay on the waterflow circuit rejects surge-related false alarms
- Dedicated tamper input supervises valve tamper switches on the same module
- Ground fault detection isolates the wiring problem to this specific module
- Rotary switch addressing — no separate programming tool required in the field
- Bicolor status LED for at-a-glance normal/active indication
- Runs on existing wiring in most retrofit and upgrade jobs
Compatibility
Kidde intelligent addressable fire alarm systems using analog addressable loop wiring.
Brand:
Kidde Commercial
Form factor:
Two-circuit analog addressable input module
Inputs:
Waterflow (16-sec alarm delay) + tamper, dry contact
Addressing:
Field rotary switches
Wiring:
Class B, existing conventional wiring compatible
Indicator:
Bicolor status LED
Why does the waterflow circuit have a 16-second delay?
It's factory-programmed to latch an alarm only after a sustained 16-second contact closure, filtering out momentary pressure surges that would cause a false alarm.
Can I use existing wiring with the GSA-WTM?
In most retrofit jobs, yes -- because the module makes its alarm decisions on-board, twisted or shielded cable typically isn't required.
How is the module addressed on the loop?
With two field-adjustable rotary switches on the front of the module -- no separate programming tool needed.
What does the ground fault detection do?
It pinpoints which specific module has the wiring fault, cutting troubleshooting time versus tracing the whole circuit back to the panel.
Spec Sheet
