Red LED Tachometer RPM Speed Meter with Proximity Switch Sensor NPN

Description :
Digital Red LED Tachometer RPM Speed Meter + Proximity Switch Sensor NPN
Specification :
Power requirement : DC 8-15V or AC6-18V.
Measure range : 99999 ~ 3.8RPM.
Error range : ± 0.5 ‰ - 1.5 ‰ rpm
Clear zero : Automatic .
Clear zero time : About 10s.
Refresh frequency : 0.2-0.5S(120-1200RPM), 0.25-0.06S(2400-9999RPM).
Response frequency : 100HZ.
Measure indication : (RPM<5000, ±2), (RPM>5000, ±3).
Sign : NPN 3 wires normally open.
Display : 5 x 2.5cm red LED.
Tachometer size : 78 x 42 x 13mm.
Panel cutout size : 71 x 38mm.
Hall proximity model : NJK-5002C .
Detected objects : Magnet.
Detection range : 1mm-10mm.
Proximity output current : 20mA(For the sensor).
Operating temperature : -10 to 60°C.
Sensor wiring : brown(Power+), blue(Power-), black(signal).
Sensor size : 37 x 12 x 10mm.
Connect diagram:

Package included :
1 x Red LED tachometer
1 x NJK-5002C NPN hall proximity sensor
Details pictures :