---
product_id: 120834747
title: "4 Digital Blue LED Tachometer, RPM Speed Meter Digital Motor with Hall Proximity Switch Sensor NPN for Conveyor Belts"
brand: "eeekit"
price: "¥6617"
currency: JPY
in_stock: true
reviews_count: 9
category: "Eee Kit"
url: https://www.desertcart.jp/products/120834747-4-digital-blue-led-tachometer-rpm-speed-meter-digital-motor
store_origin: JP
region: Japan
---

# 0.1% measurement accuracy 4-digit blue LED display 10-9999 RPM range 4 Digital Blue LED Tachometer, RPM Speed Meter Digital Motor with Hall Proximity Switch Sensor NPN for Conveyor Belts

**Brand:** eeekit
**Price:** ¥6617
**Availability:** ✅ In Stock

## Summary

> ⚡ Stay Ahead of the Curve with EEEKit’s Precision RPM Mastery!

## Quick Answers

- **What is this?** 4 Digital Blue LED Tachometer, RPM Speed Meter Digital Motor with Hall Proximity Switch Sensor NPN for Conveyor Belts by eeekit
- **How much does it cost?** ¥6617 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/120834747-4-digital-blue-led-tachometer-rpm-speed-meter-digital-motor)

## Best For

- eeekit enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Stability:** Powered by cutting-edge A/D conversion and high-stability ICs for lightning-fast, interference-resistant measurements.
- • **Memory That Works for You:** Set parameters once and trust the tachometer to remember them even after power off—perfect for seamless workflow.
- • **Precision at Your Fingertips:** Experience ultra-accurate RPM readings with 0.1% error margin—never miss a beat in your motor's performance.
- • **Versatile Sensor Integration:** Beyond RPM, measure voltage, current, temperature, pressure, and displacement with the included Hall proximity sensor.
- • **Crystal Clear Blue LED Display:** Stay effortlessly informed with a bright, easy-to-read 4-digit display that updates over 3 times per second.

## Overview

The EEEKit 4 Digital Blue LED Tachometer is a compact, high-precision RPM speed meter featuring a 10-9999 RPM range with 0.1% accuracy. It boasts a bright 4-digit blue LED display refreshing over 3 times per second, powered by advanced A/D conversion chips for stable, fast response. Equipped with a Hall proximity sensor, it supports versatile applications including motor speed, voltage, current, and physical quantity measurements. Its memory function retains settings after power off, making it ideal for professional and industrial use.

## Description

Product description EEEKit 4 Digital Red/Blue LED Tachometer RPM Speed Meter + Hall Proximity Switch Sensor NPN Led Panels Digital Led Module Display Type: LED display Voltage: DC12-24V Current: 40mA Measurement Range: 10-9999rpm Accuracy: 0.1％ Clear Zero Time: About 10s Display Refresh Rate: >3 times/sec Size: about 80*25*40mm(L*W*H) Installation Size: about 76*39mm 4-digits display, clear and easy for readings. Mini size, high performance and fast reaction speed. With good stability, high accuracy, anti-interference ability. Over-range display, the thousand unit display "1" or "-1", the last three do not show. Using the latest A/D conversion chip, high stability reference IC and stick chip components. Detection range: 1mm-10mm Proximity output current: 20mA(For the sensor) Operating temperature: -10 to 60°C Sensor size: 60 x 10mm Sensor wire length: 1.2M Magnet: 10x2mm Package Includes: 1 x LED Tachometer.1 x NPN hall proximity sensor.1 x Magnet

Review: Works as advertised, very good value - Price is one of the best I found. No instructions are included, however the pictures on desertcart give a wiring diagram.. This is necessary because the "printing" on the case is almost too small to see. Plenty (actually more than enough) wire length is provided. Using this is quite valuable for me, the previous (from the factory) minimum speed was around 650 RPM, using this RPM indicator as a reference I was able to modify the speed drive to lower my minimum speed to near the 500 RPM I desired. Also I was able to see how fast this machine would go if the max speed stop is bypassed. The display can be mounted in a "project box" for a more professional appearance. (The current installation is temporary, and I haven't done this yet). The photos show my "temporary" installation". Demonstrating the device works as advertised. I assume it is accurate, although I do not have a standard to compare it to. RPM indications (in photos) show the limits of the machine (normal speed controls overridden to achieve top attainable speed). One slight negative, the display does not give "instant" response. Once speed changes it takes about a second to update. This isn't an issue but I felt obligated to point this fact out in the review.
Review: Great and hackable - If you look at the circuit board there are places where extra buttons can be soldered in. Do this and you get a preprogrammed set of goodies. Stop watch, speed count, slower count, number stuff and stuff. 9 of the stuffs. If you have a temp probe the right Ω then it has a stuff for that too already programmed and ready to use, just need a button.. worth the price, every penny..

## Features

- High Accuracy: The measurement range is 10-9999rpm with 0.1% accuracy. Clear zero time in about 10 seconds. Response frequency: > 3 times/second. Voltage: DC 12-24V, Current: 40mA
- Clear & Easy Reading: Features a blue 4-digit LED display for clear and easy to read. The digital LED tachometer size is about 80*25*40mm(L*W*H)
- High Stability: Uses the latest A/D conversion chip, high stability reference IC, and stick chip components. Stable and fast response. Overrange display shows "1" or "-1" for thousands of units, with the last three digits not displayed
- Settable Parameters: Parameters are memorized when powered off. Ideal for detecting motor speeds
- Extensive Applications: The digital rpm gauge tachometer is suitable for measuring voltage and current, and can be an external sensor to measure temperature, pressure, displacement, and other physical quantities

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07PT7QPXM |
| Best Sellers Rank | #137,515 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #27 in Industrial Tachometers |
| Brand | EEEKit |
| Brand Name | EEEKit |
| Customer Reviews | 4.2 out of 5 stars 191 Reviews |
| Item Dimensions | 4 x 8 x 2.5 inches |
| Item Weight | 0.09 Kilograms |
| Item dimensions L x W x H | 4 x 8 x 2.5 inches |
| Manufacturer | EEEkit |
| Material | Plastic |
| Material Type | Plastic |
| Model | H93120U-E001204977 |
| Number of Items | 1 |
| Part Number | H93120U-E001204977 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** EEEKit
- **Material:** Plastic
- **Item dimensions L x W x H:** 4 x 8 x 2.5 inches
- **Item Weight:** 0.09 Kilograms
- **Manufacturer:** EEEkit

## Images

![4 Digital Blue LED Tachometer, RPM Speed Meter Digital Motor with Hall Proximity Switch Sensor NPN for Conveyor Belts - Image 1](https://m.media-amazon.com/images/I/31fgqGkyN8L.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as advertised, very good value
*by G***Y on January 13, 2020*

Price is one of the best I found. No instructions are included, however the pictures on Amazon give a wiring diagram.. This is necessary because the "printing" on the case is almost too small to see. Plenty (actually more than enough) wire length is provided. Using this is quite valuable for me, the previous (from the factory) minimum speed was around 650 RPM, using this RPM indicator as a reference I was able to modify the speed drive to lower my minimum speed to near the 500 RPM I desired. Also I was able to see how fast this machine would go if the max speed stop is bypassed. The display can be mounted in a "project box" for a more professional appearance. (The current installation is temporary, and I haven't done this yet). The photos show my "temporary" installation". Demonstrating the device works as advertised. I assume it is accurate, although I do not have a standard to compare it to. RPM indications (in photos) show the limits of the machine (normal speed controls overridden to achieve top attainable speed). One slight negative, the display does not give "instant" response. Once speed changes it takes about a second to update. This isn't an issue but I felt obligated to point this fact out in the review.

### ⭐⭐⭐⭐⭐ Great and hackable
*by Z***K on March 1, 2025*

If you look at the circuit board there are places where extra buttons can be soldered in. Do this and you get a preprogrammed set of goodies. Stop watch, speed count, slower count, number stuff and stuff. 9 of the stuffs. If you have a temp probe the right Ω then it has a stuff for that too already programmed and ready to use, just need a button.. worth the price, every penny..

### ⭐⭐⭐⭐ Simple inexpensive tachometer
*by P***N on September 17, 2024*

This is a convenient device for providing speed readout on a machine tool. I printed a snug fitting collar for the end of the lathe spindle with a pocket for the magnet which was glued in place (be sure to check polarity first). A small box holds the board and display, a switch, and a 9V battery. The listing and photos have contradictory statements regarding voltage requirements, and the label stated 12-24V , but 8-24 seems to be correct. The device activates at a little over 8V. An aluminum bracket for holding the Hall sensor was attached to the back and that was it. The readings were accurate based in comparisons to a laser tachometer, and the display is fine and reasonably stable after a few seconds (the actual image is better than in the pictures because I just used a cell phone). Overall, this is a nice addition for 18 bucks. I subtracted one star because of the poor documentation. It is apparent from the reviews that many people found the hookup to be difficult. I believe it is actually very simple but needlessly confused by the bad description. One problem is that the connector wires are all white with red markings on the back to distinguish them. However, the photos show only the all white side. Since the plug can only be inserted one way, if the colored sensor wires connection to the labeled-side connector wires was shown in a single photo it probably would have eliminated all confusion. Anyway, several prior reviews have provided an accurate description of the hookup, and the Amazon description is also correct - just needlessly confusing.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-07-17*