5155 Crossing Arm Limit Switch Change Over Module $183.02 Quantity discounts available QuantityPrice Quantity -+ Add to Cart Details replaces old style microswitches and relays that were prone to freezingused in crossing arms onlysee 5151 for stop arm kit7 wi... Details Back Detailsreplaces old style microswitches and relays that were prone to freezingused in crossing arms onlysee 5151 for stop arm kit7 wire