TELEDYNE LAARS E2312300 Pressure Switch, Air, SPDT, NO, Rheos+
Used on the following models:
RHHH1200, RHHH 1200, RHHH1600, RHHH 1600, RHHH2000, RHHH 2000, RHHH2400,
RHHH 2400, RHHV1200, RHHV 1200, RHHV1600, RHHV 1600, RHHV2000, RHHV 2000,
RHHV2400, RHHV 2400.