DIGITEN 4 Digital LED Tachometer RPM Speed MeterHall Proximity Switch Sensor NPN BlueSensor Mounting Holder

Specification Power requirement: DC 8-15V Measure range : 5-9999RPM. Clear zero: Automatic. Clear zero time: about 10s. The greater RPM value, the longer clear zero time. Refresh frequency: 0.2-0.5S@120-1200RPM; 0.25-0.06S@2400-9999RPM. Display: BLUE 0.56 inch LED Sign: Pusle signal, Hall NPN 3 wires normally open. Hall proximity model: NJK-5002C Appearance: M12mm cylinder. Best Detection range: 2-3mm (Max: 10mm) Proximity output current: 200mA Detected objects: magnet Response frequency: 100HZ Tachometer dimension: 72x36x20mm, panel cutout Dimension: 68x33mm. Sensor dimention: M12x10x55mm. Sensor wiring: brown--Power+; blue--Power-; black--signal. Operating temperature: 0 to 50?. Package includes Tachometer x 1 Hall NPN proximity sensor x 1 Magnet x 1 L-shaped sensor mounting bracket x 1 Tips? 1.Please confirm that all the wires are connected correctly. 2. The direction of the magnet must be correct. If it is not correct, please flip the magnet. 3.The distance between the magnet and the sensor must be kept at 2-3mm (0.07"-0.12"). If you have any other questions, please feel free to contact us by email, we will definitely solve the problem for you.