Steer Clear of Costly FCC Fines for Lighting Violations
The TLM-2 Tower Light Monitor is a microprocessor-driven system designed to keep watch over FAA type A incandescent and LED tower lights. It lets you catch lighting compliance issues early, before minor faults escalate into steep penalties.

What the TLM-2 Offers
- Dedicated alarm outputs for photocell, flasher, beacon and marker faults
- A general alarm output that fires on any kind of failure
- Status outputs showing lights on/off and beacon on/off
- LED indicators for each alarm and status output
- Opto-isolated outputs that protect external site monitoring equipment
- Easy installation inside the transmitter building, even when the lighting controls are located at the tower
- Complete lighting compliance coverage: alarms for single light failure (marker and beacon), beacon flash rate or on/off ratio outside FAA specs, and photocell failure
- Failsafe alarm design: outputs stay normally closed when no alarm is present, and a power loss creates an open-circuit alarm condition
- Built from off-the-shelf components, with every IC socketed for simple servicing
One Box Covers All Your Tower Monitoring Needs
All the essentials for tower light monitoring are combined in a single unit. Contact FM Services in Wilkesboro, NC at (336) 667-7091 to learn more.
TLM-2 Manuals and Downloads
TLM-1 Manuals and Downloads
Contact Us
For more information, distributor details, comments or questions about the TLM-2, just send us an email.
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The TLM-2 keeps an eye on each part of your tower lighting system, so a failed marker, beacon or photocell shows up as a clear alarm rather than a surprise inspection finding. Because its outputs are opto-isolated and failsafe, it works alongside your existing site monitoring gear without putting it at risk.