The tachometer is small,cost-effective. It fits 5-9999 RPM speed motor and can accurately measure the RPM of various motors. Features & Specifications: Tachometer power supply: DC 8-15V (Recommended: DC 12V). Hall proximity switch sensor power supply: DC 5-30V (Recommended: DC 12V). Measure range: 5-9999RPM. Zero clearing (Reset): Automatic. Zero clearing time: about 10s. Refresh rate: 0.2-0.5S@120-1200RPM; 0.25-0.06S@2400-9999RPM. Measurement Accuracy: RPM <5000, ±2; RPM>5000, ±3. Display: Blue 0.56" LED. Input sign: Voltage pulse signal, active contact signal, PNP or NPN proximity switch sensor signal, Hall proximity switch sensor signal. Dimension: 72x36x20mm. Installation: Embedded. Installation size: 68x33mm. Operating Temperature: 0~50°C. Tachometer wiring: Red --> +12VDC(Power+); Black --> GND(Power-); Yellow --> IN+(Signal input). Hall proximity switch sensor wiring: Brown(BN) --> +12VDC(Power+); Blue --> GND(Power-); Black --> Signal output. Recommended wiring: Both the red wire of the tachometer and the brown wire of the hall sensor are connected to +12VDC (Power+). Both the black wire of the tachometer and the blue wire of the hall sensor are connected to GND (Power-). The yellow wire of the tachometer is connected to the black wire of the hall sensor. Package Included: 1x Blue LED Tachometer 1x Hall proximity switch sensor 1x Magnet Without instruction manual.
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