S350A,C stage modules can be used with respective temperature (A350) controls. The stage modules have three adjustments—reverse or direct-acting operation, differential (1 to 30°F, 0.5 to 17°C), and offset (1 to 30°F, 0.5 to 17°C).
The S351 stage module can be used with respective humidity (W351) controls. The stage modules have three adjustments—reverse or direct-acting operation, differential (2 to 10% RH), and offset (2 to 30% RH).
S352 stage modules can be used with respective pressure (P352) controls. The stage modules have three adjustments—reverse or direct-acting operation, differential (2 to 50 psi), and offset (2 to 50 psi).
All stage modules have an SPDT relay output with LED indication.