DIGITEN 4 Digital LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN Red
DIGITEN 4 Digital LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN+Sensor Mounting Holder (Green)
DIGITEN Hall Sensor Proximity Switch NPN 3-Wires Normally Closed NC with Magnet
DIGITEN 4 Digital LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN+Sensor Mounting Holder (Blue)