{"id":15193073582240,"title":"DONGKER Digital LED Tachometer, AC 230V 110V Digital RPM Motor Tachometer with Hall Proximity Switch Sensor NPN Tachometer","handle":"dongker-digital-led-tachometer-ac-230v-110v-digital-rpm-motor-tachometer-with-hall-proximity-switch-sensor-npn-tachometer","description":"\u003ch3\u003eDONGKER Digital LED Tachometer, AC 230V 110V Digital RPM Motor Tachometer with Hall Proximity Switch Sensor NPN Tachometer\u003c\/h3\u003e \u003cp id=\"b\"\u003e\u003c\/p\u003e \u003ch3\u003eProduct Features\u003c\/h3\u003e \u003cul class=\" a\"\u003e \u003cli\u003eHIGH PRECISION MEASUREMENT: Measuring range: 10-9999; Measurement accuracy: 0.1%, measured value 1 word; Display refresh rate: \u0026gt;3 times\/second\u003c\/li\u003e \u003cli\u003eAnti interference: Comes with Hall sensor and magnet, good stability, accurate Hall induction, reliable speed measurement, strong anti interference ability.\u003c\/li\u003e \u003cli\u003eLED DISPLAY: Equipped with a 4-bit digital LED display, which makes the speedometer clear and easy to read.\u003c\/li\u003e \u003cli\u003eOVER RANGE DISPLAY: When the rotation speed is too low, \"LLLL\" will be displayed; 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Measurement accuracy: 0.1%, measured value 1 word; Display refresh rate: \u0026gt;3 times\/second\u003c\/li\u003e \u003cli\u003eAnti interference: Comes with Hall sensor and magnet, good stability, accurate Hall induction, reliable speed measurement, strong anti interference ability.\u003c\/li\u003e \u003cli\u003eLED DISPLAY: Equipped with a 4-bit digital LED display, which makes the speedometer clear and easy to read.\u003c\/li\u003e \u003cli\u003eOVER RANGE DISPLAY: When the rotation speed is too low, \"LLLL\" will be displayed; If the speed is too high, \"HHHH\" will be displayed\u003c\/li\u003e\n\u003cli\u003ePLEASE NOTE: 1.Avoid strong electromagnetic interference; 2.When testing, the Hall switch and the magnet must be firmly attached, otherwise there will be vibration, resulting in a jump or inaccurate reading, and the distance between the Hall switch and the magnet must be within 10mm\u003c\/li\u003e \u003c\/ul\u003e"}