4 X Digital Speedometer Red/Blue LED + NPN Hall Proximity

Specifications: Measuring accuracy: ± 0., 1%., Display mode: 0., 56 inch LED. 4 Digital LED Red Blue Green Tachometer RPM Speed ... – Vicedeal LED display (optional): red, blue. 4-digit display: The LED display has two choices: red and blue, four-digit precision display, display refresh rate, real-time update with a speed of more than three times per second. Weight: 80 g (red), 105 g (blue). Input signal voltage: low level: -30V -0., 6V, high level: 4-30V. If you use a mechanical switch or micro switch, please try to use a better quality so as not to be mistaken, and suggest a magnetic control switch Box contents: 1 x speedometer. 1 x Hall NPN Proximity Sensor Good stability, high precision and strong anti-interference ability. Display refresh rate: 3 times/sec. Hall Sensor Tachometer 4 X Digital Speedometer Red/Blue LED + NPN Hall Proximity NPN Proximity Switch Tachometer 【Parameter Input】Input pulse signal: NPN / PNP open collector, contact switch, contactless switch, level pulse. 1 x Hall NPN proximity sensor. Magnet size: 5mm 3mm. Sensor wiring:brown(Power ),blue(Power-),black(signal). Speed range: 99999 ~ 3.8 r / min... Good performance: the speed panel meter uses the latest A/D converter chip and high stability reference IC. 1set 12v 24v Measuring Gauge 4 Digital Blue/green/red Led Tachometer Rpm Speed Meter 10 9999rpm Hall Proximity Switch Sensor Npn I4442549833 Efficient completion of work.