The Gefran 40TB is a microprocessor based, 2‑channel alarm unit, format 96x96 (1/4 DIN), manufactured with SMT. Its operator interface is comprehensive and efficient, with two 4‑digit displays for the two process variables and engineering units indications. It is also equipped with a red LED bar graph, which can be associated to process variables and to peak values. Three LEDs indicate the output status, while 3 more LEDs can be configured to indicate different functional conditions. The instrument has a Lexan membrane faceplate (guaranteed to IP65) with 4 keys.

Communication RS-485, RS-232
Power supply 11∼27 VAC/DC
Accuracy 0.2%
Operating temperature 32 to 122 Degrees F
IP65 rated