---
product_id: 2001521
title: "ACDelco 3/8” & 1/2\" Heavy Duty Digital Torque Adapters with Buzzer and LED Flash Notification – ISO 6789 Standards with Certificate of Calibration (1/2” (14.8 to 147.6 ft-lbs.))"
brand: "acdelco tools"
price: "C$8652"
currency: NIO
in_stock: true
reviews_count: 9
category: "Ac Delco Tools"
url: https://www.desertcart.ni/products/2001521-acdelco-3-8-and-1-2-heavy-duty-digital-torque
store_origin: NI
region: Nicaragua
---

# LED + buzzer torque confirmation Long-lasting CR2032 coin battery included Precision torque range 14.8-147.6 ft-lbs ACDelco 3/8” & 1/2" Heavy Duty Digital Torque Adapters with Buzzer and LED Flash Notification – ISO 6789 Standards with Certificate of Calibration (1/2” (14.8 to 147.6 ft-lbs.))

**Brand:** acdelco tools
**Price:** C$8652
**Availability:** ✅ In Stock

## Summary

> 🔧 Torque Like a Boss — Precision Meets Power

## Quick Answers

- **What is this?** ACDelco 3/8” & 1/2" Heavy Duty Digital Torque Adapters with Buzzer and LED Flash Notification – ISO 6789 Standards with Certificate of Calibration (1/2” (14.8 to 147.6 ft-lbs.)) by acdelco tools
- **How much does it cost?** C$8652 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/2001521-acdelco-3-8-and-1-2-heavy-duty-digital-torque)

## Best For

- acdelco tools enthusiasts

## Why This Product

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

## Key Features

- • **Ready Out of the Box:** Includes batteries and a custom molded hard case—calibrated and primed for immediate use.
- • **Built for the Pro Grind:** Lightweight (0.44 lbs) yet rugged design fits seamlessly into your daily workflow.
- • **Versatile Measurement Modes:** Switch effortlessly between ft-lbs, N-m, in-lbs, and kg-cm on a crisp LCD display.
- • **Pinpoint Accuracy, Every Time:** ISO 6789 certified calibration ensures ±2% precision for flawless torque control.
- • **Smart Alerts for Perfect Tightening:** Audible buzzer and LED flash notify you instantly when target torque is reached—no guesswork.

## Overview

The ACDelco 1/2” Digital Torque Adapter (ARM602-4) delivers professional-grade torque accuracy from 14.8 to 147.6 ft-lbs with ISO 6789 certification. Featuring an intuitive LCD, multi-unit display, and smart buzzer plus LED alerts, it guarantees precise tightening without the guesswork. Lightweight and calibrated for immediate use, it’s the ultimate upgrade for engineers and mechanics demanding reliability and efficiency.

## Description

The ACDelco Brand has been around well over 100 years and its name has become synonymous with quality & reliability. ACDelco power tools are built for people who make a living with their tools, day in and day out, and require exceptional sturdiness and reliability. ACDelco offers the most complete line of digital torque wrenches and adapters for professionals who require high precision measurement on torque (ft-lbs./Nm) and angle degree for their job. Please use selection guides to choose the right digital torque wrench with right torque range for your application. FEATURES . Static torque measurement. Standard functions: torque setting, measurement setting, mode setting. Operation in both clockwise and counterclockwise directions. LCD display shows N-m (or kg-cm, in-lbs., ft-lbs.) measurements. Audible torque confirmation by means of buzzer Specifications - Model Number: ARM602-4 - Head Size: 1/2" - Torque Range: (14.8 to 147.6 ft-lbs.) - Tool Weight: 0.44 lbs. (0.2 kg) - Battery: 2-coin batteries (CR2032 - included)

Review: Great product - It's been some time since i used this but all the features work as explained. The only problem is that setting the tool to alarm you when you reach the desired torque is just a bit convoluted. Don't get me wrong, it works perfectly but you must follow directions that are in the manual. If you don't, you're going to know something is amiss before you strip a bolt. There was something about setting the torque that wasn't as straightforward as it seems it should be. If you only use the tool all the time, no problem, you'll have the process down pat. If you use the tool only ocassionally, just make sure you keep that manual stored with the tool and follow the manual each time you use the tool. As for accuracy??? All I can say is I trust this tool much more for ehigh torque value than I trust my old, inexpensive torque wrenches that I have used and become familiar with over 15 years. I tested the tool against my torque wrenches for lower values and they were pretty close. I used this tool on a strongarm bar instead of using a torque wrench. Torque until the alarm goes off. Works great. If I need one of these that is calibrated for higher values, I will buy the same brand.
Review: WOW - great product design - GREAT product design. I really like this tool. Comes with a nice blow molded, custom fitted, plastic case. The case has with what appears to be a substantial clamp. You can display torque readings in newton-meters(N-m), foot-pounds or inch-pounds. It uses one CR2032 coin battery and will auto shut-off after 60 seconds of no use. I own 4 different mechanical torque wrenches (3x Precision Instruments and 1x Sears Craftsman). I estimate I have spent over $500 for these wrenches - including the occasional calibration. The cost to calibrate one of these wrenches can run from about $60 on up to almost $100. So, paying for just one calibration of a mechanical torque wrench costs more then buying one ARM602-4. Therefore, I believe his tool represents a great value. The published accuracy for the ARM602-4 is 2% in the CW direction. My best Precision Instruments torque wrench is 3%. The big disadvantage with the ARM602-4 is its size - it will not fit in similar tight places that a mechanical ratchet torque wrench can fit. When I received my ARM602-4, I checked my other torque wrenches. I have a relatively new ( a couple of years old) Precision Instruments 1/2 inch split beam that agrees well my ARM602-4. But when I checked my old Sears Craftsman 3/8 inch, I found it was WAY off (but it has been almost 10 years since I had it calibrated). Yes, it is not evident which tool will have the most accurate torque measurement - but I think it safe to assume that a brand new ARM602-4 will have been recently tested for calibration. I work as an engineer on new product development (but I spend my spare time wrenching). I believe the product design team hit it out-of-the-park on this design. Durability? I can not say yet - I have only had it about one month. But of course, I would not kick it around on the garage floor. But I do not kick my mechanical torque wrenches around either. With the twist grip style torque wrenches - if you drop them when the spring is not tight - you could knock them out of whack. And then you would be looking at a new calibration. Torque wrenches - including this tool - should be handled with much more care than any standard ratchet or wrench. I have had nothing but problems with the click mechanism sticking on my Precision Instruments 3/8 inch wrench. EVEN after Precision Instrument "repaired" this wrench in 2014. So I appreciate the fact that the ARM602-4 does not have any mechanism that clicks and releases. One thing I have learned, since I purchased this tool - is to SLOW down when attempting an accurate torque setting. This ARM602-4 can quickly capture a peak torque value. So if you quickly snap tighten your click style mechanical wrench you will see more of a difference in readings. I believe the difference can be explained by your technique and the fact that humans have a much slower response than electronics. By the time you feel the click and stop tightening your mechanical torque wrench - you can easily overshoot. So, I have learned to slow down - and I can now achieve much better agreement between a recently calibrated mechanical torque wrench and this electronic torque tool. This has been a great purchase for me. I has me re-thinking the value of mechanical torque wrenches. If you do most of your torque settings where you have adequate clearance (like engine builds with the engine mounted to a stand or wheel lugs) the ARM602-4 maybe a better choice then buying one of the old, unreliable mechanical click style torque wrenches.

## Features

- ½ Digital Torque Adapter ACD-ARM602-4

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004VYURT0 |
| Batteries | 2 CR2 batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Manganese Dioxide |
| Best Sellers Rank | #111,095 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #16 in Torque Gauges |
| Brand | ACDelco Tools |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,115) |
| Date First Available | August 7, 2012 |
| Display Style | LCD |
| Finish | Polished |
| Finish Type | Polished |
| Global Trade Identification Number | 04716872170715 |
| Head Style | Box End |
| Included Components | Digital Torque Adapter, Hard Shell Case |
| Is Discontinued By Manufacturer | No |
| Item Length | 1.75 Inches |
| Item Package Quantity | 1 |
| Item Torque | 147 Foot Pounds |
| Item Weight | 0.352 ounces |
| Item model number | ARM602-4 |
| Manufacturer | Durofix Inc. |
| Material | Plastic |
| Measurement System | Metric |
| Number of Handles | 1 |
| Operation Mode | Electric |
| Part Number | ARM602-4 |
| Pattern | 1/2” (14.8 to 147.6 ft-lbs.) |
| Power Source | Air Powered |
| Size | 1/2” (14.8 to 147.6 ft-lbs.) |
| Special Features | Lightweight |
| Style | Adapter |
| UPC | 031111202304 072090493550 031113163047 |
| Warranty Description | 1 Year Limited Warranty |

## Product Details

- **Brand:** ACDelco Tools
- **Item Length:** 1.75 Inches
- **Item Package Quantity:** 1
- **Item Weight:** 0.01 Kilograms
- **Material:** Plastic

## Images

![ACDelco 3/8” & 1/2" Heavy Duty Digital Torque Adapters with Buzzer and LED Flash Notification – ISO 6789 Standards with Certificate of Calibration (1/2” (14.8 to 147.6 ft-lbs.)) - Image 1](https://m.media-amazon.com/images/I/61SgL2FHBEL.jpg)

## Available Options

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

## Questions & Answers

**Q: I see reviewers make reference to audible warning. Does that mean it provdes an increasing tempo of beeps as you approach the torque you've set?**
A: The beep will increase temp as it reaches the target torque limit.  Once it is reached, it will provide a constant beep sound to notify it has reached.

**Q: Can I use it as a torque wrench?**
A: Yes. As long as you have the room for it.  A little clumsy for torque over 100 ft. lbs.

**Q: The manual says the power button should not be pressed with torque applied. I accidentally did that. Will it cause accuracy problem?**
A: I am pretty sure that the device on start up takes a reading from the strain gauge in the device and whatever that reading is defines that value as zero torque applied. Same thing with digital scales in the kitchen, on startup they determine what zero mass/weight is. Whatever reading/torqued applied will be wrong, if a load was applied on startup.Once off power the device on with no load and I believe you will be in business again.

**Q: I don't see in specs the accuracy percentage?**
A: Here is the ACDelco page for this Torque adapter: http://www.acdelco-tools.com/index.php?route=product/product&product_id=132It says "Accuracy	CW ± 2%; CCW ± 3%".

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by D***S on October 14, 2022*

It's been some time since i used this but all the features work as explained. The only problem is that setting the tool to alarm you when you reach the desired torque is just a bit convoluted. Don't get me wrong, it works perfectly but you must follow directions that are in the manual. If you don't, you're going to know something is amiss before you strip a bolt. There was something about setting the torque that wasn't as straightforward as it seems it should be. If you only use the tool all the time, no problem, you'll have the process down pat. If you use the tool only ocassionally, just make sure you keep that manual stored with the tool and follow the manual each time you use the tool. As for accuracy??? All I can say is I trust this tool much more for ehigh torque value than I trust my old, inexpensive torque wrenches that I have used and become familiar with over 15 years. I tested the tool against my torque wrenches for lower values and they were pretty close. I used this tool on a strongarm bar instead of using a torque wrench. Torque until the alarm goes off. Works great. If I need one of these that is calibrated for higher values, I will buy the same brand.

### ⭐⭐⭐⭐⭐ WOW - great product design
*by D***W on March 4, 2016*

GREAT product design. I really like this tool. Comes with a nice blow molded, custom fitted, plastic case. The case has with what appears to be a substantial clamp. You can display torque readings in newton-meters(N-m), foot-pounds or inch-pounds. It uses one CR2032 coin battery and will auto shut-off after 60 seconds of no use. I own 4 different mechanical torque wrenches (3x Precision Instruments and 1x Sears Craftsman). I estimate I have spent over $500 for these wrenches - including the occasional calibration. The cost to calibrate one of these wrenches can run from about $60 on up to almost $100. So, paying for just one calibration of a mechanical torque wrench costs more then buying one ARM602-4. Therefore, I believe his tool represents a great value. The published accuracy for the ARM602-4 is 2% in the CW direction. My best Precision Instruments torque wrench is 3%. The big disadvantage with the ARM602-4 is its size - it will not fit in similar tight places that a mechanical ratchet torque wrench can fit. When I received my ARM602-4, I checked my other torque wrenches. I have a relatively new ( a couple of years old) Precision Instruments 1/2 inch split beam that agrees well my ARM602-4. But when I checked my old Sears Craftsman 3/8 inch, I found it was WAY off (but it has been almost 10 years since I had it calibrated). Yes, it is not evident which tool will have the most accurate torque measurement - but I think it safe to assume that a brand new ARM602-4 will have been recently tested for calibration. I work as an engineer on new product development (but I spend my spare time wrenching). I believe the product design team hit it out-of-the-park on this design. Durability? I can not say yet - I have only had it about one month. But of course, I would not kick it around on the garage floor. But I do not kick my mechanical torque wrenches around either. With the twist grip style torque wrenches - if you drop them when the spring is not tight - you could knock them out of whack. And then you would be looking at a new calibration. Torque wrenches - including this tool - should be handled with much more care than any standard ratchet or wrench. I have had nothing but problems with the click mechanism sticking on my Precision Instruments 3/8 inch wrench. EVEN after Precision Instrument "repaired" this wrench in 2014. So I appreciate the fact that the ARM602-4 does not have any mechanism that clicks and releases. One thing I have learned, since I purchased this tool - is to SLOW down when attempting an accurate torque setting. This ARM602-4 can quickly capture a peak torque value. So if you quickly snap tighten your click style mechanical wrench you will see more of a difference in readings. I believe the difference can be explained by your technique and the fact that humans have a much slower response than electronics. By the time you feel the click and stop tightening your mechanical torque wrench - you can easily overshoot. So, I have learned to slow down - and I can now achieve much better agreement between a recently calibrated mechanical torque wrench and this electronic torque tool. This has been a great purchase for me. I has me re-thinking the value of mechanical torque wrenches. If you do most of your torque settings where you have adequate clearance (like engine builds with the engine mounted to a stand or wheel lugs) the ARM602-4 maybe a better choice then buying one of the old, unreliable mechanical click style torque wrenches.

### ⭐⭐⭐⭐ Good product. Easy to set.
*by M***K on September 24, 2025*

This is a good product. It is very easy to use compared to the Chineese designed variants on Amazon. Those are near impossible to quickly set. This one is pure simplicity with no memory functions, because you just don't need it its so quick to adjust. Comes with a certification and useful instruction manual. I just returned a half price competitor - it actually performed the same, but it was frustrating to use and wasted 15 minutes every time you needed to switch the settings. This one also works in the CW and CCW directions without having to adjust anything.

## Frequently Bought Together

- ACDelco 3/8” & 1/2" Heavy Duty Digital Torque Adapters with Buzzer and LED Flash Notification – ISO 6789 Standards with Certificate of Calibration (1/2” (14.8 to 147.6 ft-lbs.))
- NEIKO 30249A 5 Piece Impact Socket Adapter Set, Standard SAE, 1/4, 3/8, 1/2" Cr-V Steel Impact Driver & Wrench Conversion Kit Socket Reducer, Locking Socket Adapter Set

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-02*