Fasizi DC 8 24V 4 Digital LED Tachometer RPM Speed Meter with Hall Proximity Switch Sensor NPN 10 9999RPM

The speed panel meter uses the latest A / D converter chip and high stability reference IC. Good stability, high precision and strong anti-interference ability. The external appearance takes standard size and is easy to install. Wide range of applications including voltage, current and external sensor measurements to measure temperature, pressure, displacement and other physical quantities. Input pulse signal: NPN / PNP open collector, contact switch, contactless switch, level pulse. Input signal voltage: low level: -30V -0.6 V, high level: 4-30V. The LED display has two choices: red and blue, four-digit precision display, display update rate, real-time update at a rate of more than three times per second. Measuring range: Frequency: 9999Hz, 999.9 HZ, 99.99 KHZ, automatic switching selection. The automatic range selection saves the user time and effort. Efficient completion of the work.