Description The Notifier FRM-1 is an addressable relay module designed for intelligent two-wire fire alarm systems. Equipped with dual Form-C contacts, it enables precise control of auxiliary equipment through panel-driven commands. The module supports discrete switching functions and integrates easily into Notifier intelligent system architectures. Technical Specifications Condition New/Never Used Surplus Brand Notifier Category Safety Systems Part Number FRM-1 Subcategory Safety Relay Type Addressable Relay Module Temperature Range 32°F to 120°F (0°C to 49°C) Normal Operating Voltage 15–32 VDC Humidity Range 10% to 93% non-condensing Maximum Current Draw 6.5 mA (LED on) Average Operating Current 230 µA (direct poll), 255 µA (group poll) Contacts Two Form-C (DPDT operation) LED Indicator Panel-controlled, green blink/steady red Accessories SMB500 electrical box; CB500 barrier Dimensions 4.5″ H × 4″ W × 1.25″ D (114.3 × 101.6 × 31.75 mm) Information About FRM-1 The FRM-1 is an addressable relay module built for Notifier intelligent systems, providing two isolated Form-C contacts that operate together as a DPDT switch. Its design includes rotary addressing, allowing straightforward configuration within two-wire SLC loops. The module integrates seamlessly with Notifier panels, supporting functions such as door holder control, air handler shutdown, or resetting four-wire smoke detectors. A panel-controlled LED offers status indication, ensuring clear visibility during system monitoring and diagnostics. Key Features: Dual Form-C contacts: Provides two isolated contact sets operating simultaneously for DPDT switching. Addressable design: Rotary switches allow unique addressing within intelligent two-wire systems. Panel-controlled operation: Supports programmable switching via control panel commands. Integrated LED indicator: Displays communication activity and active relay status. High noise immunity: Engineered to resist electromagnetic and radio-frequency interference. Compatible accessories: Supports SMB500 electrical box and CB500 barrier for field installation. Versatile applications: Suitable for door holders, air handler shutdown, and auxiliary device activation. The FRM-1 delivers the reliability and precision required for controlled dry-contact switching in intelligent fire alarm systems.