4-LED digital tachometer for all digital instruments Red/Blue Universal LED tachometer Tachometer + Hall effect proximity sensor NPN sensor (red)

Good stability, high precision, and strong anti-interference capability

The external appearance adopts standard size and is easy to install

Input pulse signal: open collector NPN/PNP, contact switch, non-contact switch, level pulse

Input signal voltage: low level: -30V-0.6V, high level: 4-30V

Input signal voltage: low level: -30V-0.6V, high level: 4-30V

Digital LED Tachometer Speedometer Tachometer Digital Tachometer NPN Sensor Meters Test Meters and Detectors Universal LED Tachometer Tachometer Proximity Sensor NPN Sensor Detector Descriptions: The Digital LED tachometer adopts the latest high-stability A/D and C conversion chip, uses an electronic chip component, and features a reasonable circuit design. It can be used to measure voltage, current, and external sensors to measure temperature, pressure, displacement, and other physical quantities. Suitable for all types of digital instrument displays. Specifications: Measurement accuracy: 0.1% Display mode: 0.56" LED Display refresh rate: >3 times/s Working power supply: DC8-24V, 30mA, Measurement range: 10-9999 rpm Proximity detector: magnetic Appearance size: 80x42x25mm/3.14x1.65x0.98in LED display (optional): red, blue Weight: 80g (red), 105g (blue) Out-of-range display: the first indicates "1" or "-1" and the last three do not indicate