Digital Red LED Tachometer RPM Speed Meter + Hall Proximity Switch Sensor NPN

Features:
100% Brand New And High Quality
Speed range: 99999 ~ 3.8 r / min
Input Power: DC 8 ~ 24V
Output Current: 20mA
Margin of error: ¡€ 0.5 ¡« ~ ¡€ 1.5 ¡« r / min
Display: 4 LED
Dimensions: 78 x 42 x 24mm
Hole size: 76.5 x 39.5mm
Working temperature: -10 ~ 60 ¡¦
Magnet size: ¦µ6mm * 3mm
Sensor probe diameter: ¦µ12mm
Probe cable: 115cm

Package Includes
1 x Tachometer
1 x Hall NPN proximity sensor