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Honeywell 1LS1-4PG limit switch.
SIRIUS 3SF1 safety interlock position switch.
Allen-Bradley 440N series safety interlock switch.
The HIMA 62100 is a SIL 4 certified limit monitor module for analog signals in the PLANAR4 safety system, monitoring up to two analog signals for over, under and range limits. Input 0/4-20 mA, relay contact output, accuracy +/-0.1%.