4 Digital LED Tachometer RPM Speed Meter + Proximity Switch Sensor NPN

Specifications: Working power supply: DC8-24v 40 mA Measure range: 5-9999 RPM Display: Blue LED 67*32mm Sign: Pusle signal, Hall NPN 3 wires normally open Hall proximity model: NJK-5002C Appearance: M12mm cylinder Detection range: 10mm Detected objects: Magnet Response frequency: 100HZ Operating temperature: 0 to 50C Package included: 1 x Proximity switch 1 x Tachometer