2Pcs Slot-Type Optocoupler Module Counter Module New Ic om
1,08 €
2Pcs Module Counter Module Slot-Type Optocoupler New Ic. 1 module slot unobstructed, receiver tube conduction module DO output low, shelter, DO output high. 2 module DO connected to the relay, composed of the limit switch functions can also be connected to the active buzzer module, composed of the alarm.
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