---
product_id: 17210040
title: "4 Digital LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN Blue"
brand: "digiten"
price: "12.50 OMR"
currency: OMR
in_stock: true
reviews_count: 13
category: "Digiten"
url: https://www.desertcart.com.om/products/17210040-4-digital-led-tachometer-rpm-speed-meter-hall-proximity-switch
store_origin: OM
region: Oman
---

# 5-9999 RPM range Compact M12 sensor, 10mm detection range 0.56" bright blue LED display 4 Digital LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN Blue

**Brand:** digiten
**Price:** 12.50 OMR
**Availability:** ✅ In Stock

## Summary

> 🔵 Stay ahead of the RPM curve with DIGITEN’s precision pulse!

## Quick Answers

- **What is this?** 4 Digital LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN Blue by digiten
- **How much does it cost?** 12.50 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/17210040-4-digital-led-tachometer-rpm-speed-meter-hall-proximity-switch)

## 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

- • **Rapid Refresh Rate:** Updates readings every 0.06 to 0.5 seconds to keep pace with your fastest machines.
- • **Precision RPM Tracking:** Accurately measures from 5 to 9999 RPM for versatile motor monitoring.
- • **Vivid Blue LED Display:** Clear, easy-to-read 0.56" blue digits keep you informed at a glance.
- • **Robust & Compact Design:** Small 72x36x20mm tachometer and durable sensor fit tight spaces and tough environments.
- • **Plug-and-Play Hall Sensor:** Includes reliable NJK-5002C Hall NPN proximity sensor for seamless installation.

## Overview

The DIGITEN 4 Digital LED Tachometer is a professional-grade RPM speed meter featuring a wide measurement range of 5-9999 RPM powered by DC 8-15V. It includes a high-sensitivity Hall NPN proximity sensor with a 10mm detection range and a bright 0.56" blue LED display for instant, clear readings. Designed for easy installation and rapid refresh rates, this compact tachometer is ideal for precise motor speed monitoring in industrial and scientific applications.

## 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. Display: blue 0.56 inch LED Sign:Pusle signal,Hall NPN 3 wires normally open. Hall proximity model:NJK-5002C Appearance:M12mm cylinder. Detection range: 10mm 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℃. Packaging include Tachometer x 1 Hall NPN proximity sensor x 1

Review: Works Great! - Works great! Be careful when you attach the magnet. It will fly off at high rpms. Use a string epoxy like JB weld and/or drill a shallow recess for the magnet.
Review: Works great! - The original tach on my PM1127VF lathe died. I was skeptical about this one responding well at low RPM because it only has one pulse per revolution - but in fact it works really well and is very accurate (I checked it at several speeds with a hand-held tach.) Installation was very straight forward. Such a deal!

## Features

- Measure range: 5-9999RPM.
- Power requirement:DC 8-15V
- Come with hall sensor and magnet
- Display:BLUE 0.56" LED
- Measure varied motor RPM

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00VKATA9G |
| Best Sellers Rank | #144,750 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #37 in Industrial Tachometers |
| Brand | DIGITEN |
| Date First Available | April 2, 2015 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.47 ounces |
| Item dimensions L x W x H | 2.8 x 1.4 x 0.8 inches |
| Item model number | RPM1204BHA |
| Manufacturer | DIGITEN |
| Material | Plastic |
| Product Dimensions | 2.8 x 1.4 x 0.8 inches |
| UPC | 713458679208 |
| Voltage | 12 Volts |

## Product Details

- **Brand:** DIGITEN
- **Item Weight:** 70 Grams
- **Item dimensions L x W x H:** 2.8 x 1.4 x 0.8 inches
- **Material:** Plastic
- **Voltage:** 12 Volts

## Images

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works Great!
*by P***R on April 18, 2025*

Works great! Be careful when you attach the magnet. It will fly off at high rpms. Use a string epoxy like JB weld and/or drill a shallow recess for the magnet.

### ⭐⭐⭐⭐⭐ Works great!
*by G***N on May 6, 2022*

The original tach on my PM1127VF lathe died. I was skeptical about this one responding well at low RPM because it only has one pulse per revolution - but in fact it works really well and is very accurate (I checked it at several speeds with a hand-held tach.) Installation was very straight forward. Such a deal!

### ⭐⭐⭐⭐ Just What I Needed
*by J***S on February 21, 2017*

Originally posted this on the RED unit, probably won't get a "confirmed purchase" tag on it. The blue one is the one I purchased. For some reason the pics arn't showing on the other post?? Saw a lot of questions on this tach so I thought I would review it and hopefully answer some of the many questions but before I get too far along remember the old adage "You get what you pay for" most of the time. This is a very inexpensive device, something you could pay several $100 for if it were a laboratory grade piece of electronics so keep that in mind if you buy one. The Review: I needed an RPM meter for a grinder I am building on the CHEAP. It will be a 2x72 belt grinder made mainly from a couple of used treadmills. I am using the treadmill motor to drive the belt and needed to know the speed of the belt so I figured a tach on the motor shaft would give me a good idea of belt speed. Bought this inexpensive kit and am very well pleased with it. If it had had some wiring instructions(pic attached) I would have given it 5 stars. I deducted a star for having to figure it out myself. I am powering it with a 9VDC AC-DC converter that plugs into a wall receptacle, one of the little devices that power our calculators and laptops, charge our phones etc. They are commonly referred to as "WALL WARTS". I have about 20 of the things thrown in a box form over the years. This one is "rated" at 9VDC at 210ma(mili amps). Some of the pics show it hooked up to two meters and the tach kit. If you look at the meters closely you will see that the digital is reading 11.87VDC, the no-load voltage for this WW(wall-wart) is 13.2DC by my measurement. Electronics folks will understand this but for the non-electronics folks, when the power supply is loaded the voltage drops, per the rating data if it had a 210ma load it would drop to 9VDC. That brings me to the actual load, note the old analog meter, it is set on the 60mili amp scale and is reading about half scale or about 30mili amps. That means that the tach kit is only loading the WW to ~30ma there by only dropping the output voltage to the 11.87VDC Based on this the minimum rated WW could be as low as 9VDC at 50ma, a very small WW indeed. The take away here is that most any 6-9VDC WW would do the job. I am saying 6-9 and not 8-15 because of the low loading effect the tack has on the WW power supply. I say start with 6 because I have four 6VDC WWs and all of them show a no-load voltage of 8VDC or more. One of my 12VDC WWs has a no load voltage of 17.8VDC. You would not want to apply that much voltage to this unit. Check out the pics for answers to other questions such as how to wire it up. Finally I highly recommend this and the similar other color tachs for non-critical applications. Great inexpensive hobby stuff. Edit: For some reason all the pics arn't showing for this post although I see the thumbnails in this editing session. They are however showing in the the nearly identical post for the RED version of this tach. Check it out if you donot see the wiring diagram in this post.

## Frequently Bought Together

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-03-14*