---
product_id: 47909626
title: "DIGITEN 4 Digital Green LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN"
brand: "digiten"
price: "$49.42"
currency: USD
in_stock: true
reviews_count: 13
category: "Digiten"
url: https://www.desertcart.us/products/47909626-digiten-4-digital-green-led-tachometer-rpm-speed-meter-hall
store_origin: US
region: United States of America
---

# DC 8-15V power range 0.56" bright green LED display 5-9999 RPM measurement range DIGITEN 4 Digital Green LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN

**Brand:** digiten
**Price:** $49.42
**Availability:** ✅ In Stock

## Summary

> 🚀 Measure your speed, master your craft — never miss a beat with DIGITEN!

## Quick Answers

- **What is this?** DIGITEN 4 Digital Green LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN by digiten
- **How much does it cost?** $49.42 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/47909626-digiten-4-digital-green-led-tachometer-rpm-speed-meter-hall)

## Best For

- digiten enthusiasts

## Why This Product

- Trusted digiten brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision RPM Tracking:** Accurately measures speeds from 5 to 9999 RPM with ±2-3% accuracy for flawless motor monitoring.
- • **Plug & Play Hall Sensor:** Includes a reliable Hall NPN proximity sensor with magnet for seamless, non-contact RPM detection.
- • **Quick Refresh & Auto Zero:** Fast refresh rates (up to 0.06s) and automatic zero clearing keep your readings fresh and accurate without hassle.
- • **Vibrant Green LED Display:** Clear 0.56-inch green LED readout ensures instant visibility even in dim workshop environments.
- • **Compact & Versatile Design:** Slim 72x36x20mm tachometer fits perfectly on lathes, CNC machines, mowers, and more for professional-grade RPM tracking.

## Overview

The DIGITEN 4 Digital Green LED Tachometer is a compact, high-precision RPM meter designed for professional use on lathes, CNC machines, and other motorized equipment. Powered by DC 8-15V, it features a Hall NPN proximity sensor with magnet for contactless RPM detection from 5 to 9999 RPM. Its bright 0.56-inch green LED display offers clear, real-time speed readings with ±2-3% accuracy, making it an essential tool for millennial managers and makers who demand precision and reliability in their workflow.

## Description

Power requirement:DC 8-15V Measure range : 5-9999RPM. Clear zero: Automatic. Clear zero time: about 10s.the greater the RPM value,the longer the clear zero time. Refresh frequency: 0.2-0.5S@120-1200RPM;0.25-0.06S@2400-9999RPM. Measure accuracy: RPM5000,¡À3. Display: Green 0.56 inch LED Sign: Pusle signal,Hall NPN 3 wires normally open. Hall proximity model: NJK-5002C Appearance: M12mm cylinder. Detection range: 2-3mm Proximity output current: 200mA Detected objects: magnet Response frequency: 100HZ Tachometer dimension:72x36x20mm,panel cutout Dimension:68x33mm. Sensor dimention: M12x10x55mm. Sensor wiring:brown-Power+;blue-Power-;black-signal. Operating temperature: 0 to 50¡ãC. Packaging include Tachometer x 1 Hall NPN proximity sensor x 1

Review: Tachometer - Good product - Good product. Works well and appears very accurate
Review: Excellent....it works and sensible price - I’m very pleased with this...it’s been added to a metalworking lathe as attached photos. In order to keep things out of the way and clear of oil and swarf, the magnet is glued to the spinning knob at the rear of the headstock and the sensor is mounted in a wooden block underneath it, at an angle so that it’s roughly at right angles to the magnet face. The counter is also mounted at an angle in a wooden block, which allowed all the connections to be neatly inside. Both wooden blocks are held down with Velcro so that they can be removed and repositioned easily. Straightforward to fit...could be done simpler but I wanted it to be neat and out of the way. But it’s really good. I’m running mine off a 12v supply. A stronger magnet would allow the sensor to be placed further away...I did experiment but used the supplied one in the end because although I do have much stronger ones available, the supplied one did work at the required distance and it’s quite thin so doesn’t create much of a projection on the knob. I’m so pleased with this that I’ve just ordered another one as a spare! Recommended. Ps...as others have said, you need to get the magnet the right way up or it won’t work!

## Features

- Measure range: 5-9999RPM.
- Power requirement:DC 8-15V
- Come with hall sensor and magnet
- Display:red 0.56" LED
- Application: Lathe, CNC, Mower, Spring, etc.Measure varied motor RPM.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01FQMI18Y |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 17,175 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 3 in Motion, Speed & Force |
| Colour | Green |
| Customer Reviews | 4.3 4.3 out of 5 stars (627) |
| Date First Available | 16 May 2016 |
| Item Package Quantity | 1 |
| Item Weight | 99 g |
| Item model number | 5823950920 |
| Manufacturer | DIGITEN |
| Material | Wood |
| Part number | RPM1204GHA |
| Product Dimensions | 7.11 x 2.03 x 3.56 cm; 99.22 g |
| Voltage | 12 Volts |

## Product Details

- **Brand:** DIGITEN
- **Item dimensions L x W x H:** 7.1 x 2 x 3.6 centimetres
- **Item weight:** 3.5 Ounces
- **Material:** Wood
- **Voltage:** 12 Volts

## Images

![DIGITEN 4 Digital Green LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN - Image 1](https://m.media-amazon.com/images/I/71V-TVeOTXL.jpg)

## Questions & Answers

**Q: What current input does the meter require? My inverter can supply a 24V, 20mA digital supply will this suffice.**
A: Hi
   The unit is a great item I have got It on a three phase lathe the unit as stated requires 8-15 volts dc
I fitted a 240v ac adjustable power adapter and set t to 12 volt dc .if you go above 16 volts it can blow.
Hope this helps 
Jem
C

**Q: Can i use a 12v 1a switch mode led psu to drive the display?**
A: Yes, 1A is enough.

**Q: Where does the sensor fit on a V twin Honda Aero motor cycle**
A: I would think the DIGITEN 4 Digital Green LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN is not going to be easy to install on a motor bike.You will need to mount the magnet that's provided  to something that rotates with the crankshaftso the hall effect pick up sends 1 pulse per revolution to the rev counterthe magnet needs to pass within 1 or 2 mm from the sensorthe automotive tachometers I've seen either connect to the connection between the contact breaker (or electronic  ignition  module ) & HT coil   or use a pick up mounted to a spark plug cable

**Q: Does it come with instructions how to wire it up?**
A: Yes, it come with instructions it tell you how to wire.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Tachometer - Good product
*by A***R on 9 December 2025*

Good product. Works well and appears very accurate

### ⭐⭐⭐⭐⭐ Excellent....it works and sensible price
*by B***E on 18 December 2018*

I’m very pleased with this...it’s been added to a metalworking lathe as attached photos. In order to keep things out of the way and clear of oil and swarf, the magnet is glued to the spinning knob at the rear of the headstock and the sensor is mounted in a wooden block underneath it, at an angle so that it’s roughly at right angles to the magnet face. The counter is also mounted at an angle in a wooden block, which allowed all the connections to be neatly inside. Both wooden blocks are held down with Velcro so that they can be removed and repositioned easily. Straightforward to fit...could be done simpler but I wanted it to be neat and out of the way. But it’s really good. I’m running mine off a 12v supply. A stronger magnet would allow the sensor to be placed further away...I did experiment but used the supplied one in the end because although I do have much stronger ones available, the supplied one did work at the required distance and it’s quite thin so doesn’t create much of a projection on the knob. I’m so pleased with this that I’ve just ordered another one as a spare! Recommended. Ps...as others have said, you need to get the magnet the right way up or it won’t work!

### ⭐⭐⭐⭐ good tachometer
*by M***M on 12 November 2020*

got this for my mini lathe and it works well, very good digital readout, but i had to put a stronger magnet on because the one that was supplied was not strong enough .

## Frequently Bought Together

- DIGITEN 4 Digital Green LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN for Lathe Conveyor Belt
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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-12*