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 : !#!amp!*!plusmn; 0.5 !#!amp!*!permil; - 1.5 !#!amp!*!permil; rpmClear 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!#!amp!*!lt;5000， !#!amp!*!plusmn;2)， (RPM!#!amp!*!gt;5000， !#!amp!*!plusmn;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 tachometer1 x NJK-5002C NPN hall proximity sensor
Details pictures :