WINGONEER 4 Digit Tachometer Speed Display Speedometer + Proximity Sensor NPN Hall Effect Induction

Speed panel meter uses the latest A/D converter tip and high stability reference IC. Excellent stability, high precision, strong anti-interference The appearance is standard size and easy to install. Wide application including voltage, current, and external sensor measurement to measure temperature, pressure, displacement, and other physical amounts Suitable for all types of digital device displays Input Pulse Signal: NPN / PNP Open Collector, Contact Switch, Contactless Switch, Level Pulse Input Signal Voltage: Low Level: -30V -0.6V, High Level: 4-30V The LED display has two options: red and blue, 4-digit high-precision display, display update rate, real-time update at rates of 3 times per second Measuring range: Frequency: 9999Hz, 99.9 HZ, 99.99 KHZ, Auto-switch selection. Automatic range selection saves user time and effort Complete your work efficiently

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