The SEC 3100 transmitter is designed to be used with the SEC Millenium, SEC Signature infrared gas sensors, SEC 3000 toxic gas detectors, or the SEC 5000 infrared gas sensors. The SEC 3100 is a microprocessor based intelligent transmitter continuously monitoring information from the gas sensor.

The SEC 3100 has one (1) “Alarm” LED and one (1) “Status” LED. The SEC 3100 also has three (3) magnetic switches located around the circumference of the unit. This manual will describe the operation and use of the SEC 3100 transmitter.