Description
The NOTIFIER LEM-320 Loop Expander Module provides additional Signaling Line Circuits (SLCs) to compatible ONYX Series Fire Alarm Control Panels. Designed to mount as a daughter board to the LCM-320, it delivers reliable expansion capacity while maintaining system performance and survivability.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Notifier |
| Category |
Flame Safety Products |
| Part Number |
LEM-320 |
| Subcategory |
Flame Safety Amplifier |
| Voltage |
24 VDC nominal, 27.6 VDC max |
| Maximum Loop Length |
Up to 12,500 ft (3,810 m) with 12 AWG twisted unshielded |
| Wire Gauge Support |
12 to 18 AWG |
| Maximum Current |
100 mA (LEM-320), 130 mA (LCM-320) |
| Maximum Loop Current |
400 mA (single loop) |
| Maximum Resistance |
50 ohms (supervised & power-limited) |
| Temperature Range |
0°C to 49°C (32°F to 120°F) |
| Humidity Range |
Up to 93% ± 2% RH, non-condensing |
| Certifications |
UL, ULC, FM, CSFM, FDNY |
| Mounting |
Daughter board to LCM-320 |
| System Compatibility |
ONYX NFS2-3030, NFS-640 |
| Wiring Style |
Class B (Style 4) |
| Weight |
0.95 lbs |
Information About LEM-320
The LEM-320 is a loop expander module engineered for use with NOTIFIER’s ONYX Series fire alarm control panels. It mounts directly to the LCM-320, enabling the addition of SLC loops for expanded system coverage. This module is compatible with the NFS2-3030 and NFS-640 panels, supporting efficient Class B (Style 4) wiring configurations. Built with plug-in simplicity, the LEM-320 is suitable for fire protection applications where scalable loop capacity is required.
Key Features:
- Loop Expansion: Adds extra SLC loops to compatible LCM-320 modules.
- Long Wiring Distance: Supports up to 12,500 feet (3,810 m) with 12 AWG twisted unshielded wire.
- Degraded Mode Operation: Ensures survivability in case of partial system failure.
- Compact Form Factor: Installs as a daughter board within small enclosures.
- High Compatibility: Works with NFS2-3030 and NFS-640 control panels.
- Simple Installation: Plug-in mounting design reduces setup time.
- UL, FM, and CSFM Approved: Certified for fire protection applications.
- Reliable Power Performance: Operates at 24 VDC nominal (27.6 VDC max).
The LEM-320 delivers the reliability and precision required for modern fire alarm and life safety systems.
