The SMK Smoke Power Converter Module gives a two-wire conventional smoke circuit its own backup power source when it's tied into a Signature addressable data circuit, so a brownout on the main power supply doesn't take the smoke detectors down with it.
Built for the commercial installer
One SMK is required per system when using Signature UM/GSA-UM or MAB-family modules to connect 2-wire conventional detectors. The module continuously monitors the incoming supply and steps in with regulated operating voltage the moment it senses degraded power, so the conventional smoke loop stays alive through a supply fault. A two-LED status display (green normal, red alarm/active) gives a quick field check without opening a panel.
Key features
- Backup power source for 2-wire smoke circuits on a Signature data circuit
- Automatic power-degradation sensing — steps in only when needed
- Two-LED status: green normal, red alarm/active
- Fully supervised, power-limited wiring per NFPA 72 / CAN/ULC-S524
System requirements
Required when connecting 2-wire conventional smoke detectors through a Signature UM/GSA-UM or MAB-family universal module. Requires a compatible Signature addressable data circuit.
When is the SMK required?
Does the SMK need its own address?
Spec Sheet
