EUCHNER, 1.97 in Off Sensing Distance, 0.78 in On Sensing Distance, Safety Switch Read Head - 45GU57|CES-A-LNN-SC-106601 - Grainger
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Amazon.com: EUCHNER TZ1RE024BHA-C1903 TZ Series, IP52, Safety Switch, Interlock, Mechanical, 24 VDC, 4 AMP, 230 VAC, Switch : Industrial & Scientific
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