4-Digit Green LED Engine Tachometer, RPM Speed Meter, NPN Hall Proximity Switch Sensor

General Description

The engine tachometer is an RPM speed measuring device with a 4-digit green LED display. It is designed to provide clear and accurate readings, measuring engine speed up to 9999 RPM. This tachometer is equipped with a 3-wire NPN proximity switch sensor, ensuring a fast and reliable response in various applications. Technical Specifications: Item Type: Tachometer; Display: 0.56-inch green LED, 4-digit readout; Measuring Range: 10-9999 RPM; Measuring Accuracy: ±0.1%, ±1 digit readout; Refresh Rate: >3 times/sec; Dimensions: 79 x 26 x 43 mm / 3.11 x 1.02 x 1.69 in; Power Supply Voltage: 8-24V; Compatibility and Accessories: Included: 1 1 x LED tachometer 1 x Hall proximity switch 1 x round magnet 1 x cable

Installation

Connect the plug correctly according to the supplied wiring diagram. The Hall switch must be installed within 10 mm of the target.

Use shielded or twisted-pair wires to avoid electromagnetic interference. The meter signal should be as close as possible to the meter terminals to minimize the signal line length.

Use

Avoid using mechanical switches or microswitches due to their limited lifespan. If mechanical switches are used, choose higher-quality ones to avoid malfunctions.

Other information

The proximity switch type is NPN normally open. The Hall switch wire length is 1 m or less.