Feature: With a standard size, easy to install. Have good stability, high measurement precision. Strong anti-jamming capability. Specification: -Color:Red,Green,Blue -Power requirement: DC 8-24v -Measure range: 10-9999RPM -Clear zero: Automatic -Display refresher rate: 3 Times/Sec -Measure indication: RPM5000,3 -Display: Green 0.56" LED -Response frequency: 100HZ -Tachometer dimension: 79x43x25mm -Panel cutout Dimension: 76x39mm -Sensor Dimension: 12x55mm -Proximity output current: 30mA -Sensor wiring: brown-Power+;blue-Power-;black-signal -Operating temperature: -10 to 50C. -Operating humidity: 10 ~ 80% (without condensation) -Operating pressure: 80 ~ 106kPa Package Included: 1 x LED Tachometer RPM Speed Meter 1 x Hall Proximity Switch Sensor NPN Note: 1.Please allow 1-2mm error due to manual measurement. Please make sure you do not mind before you bid. 2.Colors may differ slightly from the pictures.