---
product_id: 2410713
title: "3631 Heavy-Duty Logic Probe Tester , Red"
brand: "otc"
price: "฿4234"
currency: THB
in_stock: true
reviews_count: 13
category: "Otc"
url: https://www.desertcart.co.th/products/2410713-3631-heavy-duty-logic-probe-tester-red
store_origin: TH
region: Thailand
---

# LED voltage signals 3-26V range Multi-functional testing 3631 Heavy-Duty Logic Probe Tester , Red

**Brand:** otc
**Price:** ฿4234
**Availability:** ✅ In Stock

## Summary

> 🔍 Unleash the Power of Precision Testing!

## Quick Answers

- **What is this?** 3631 Heavy-Duty Logic Probe Tester , Red by otc
- **How much does it cost?** ฿4234 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/2410713-3631-heavy-duty-logic-probe-tester-red)

## Best For

- otc enthusiasts

## Why This Product

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

## Key Features

- • **Visual Clarity:** Bright red and green LEDs for easy interpretation of voltage signals.
- • **Precision Testing:** Multi-functional design for a wide voltage range of 3-26 volts.
- • **Compact & Portable:** Lightweight and handheld design for on-the-go diagnostics.
- • **Reliable Performance:** Battery-powered for convenience and consistent operation.
- • **Versatile Applications:** Tests fuel injectors, solenoids, and various sensor outputs.

## Overview

The OTC 3631 Heavy-Duty Logic Probe Tester is a versatile, battery-powered tool designed for professionals. With a testing range of 3-26 volts and bright LED indicators, it simplifies the process of diagnosing various automotive components, including fuel injectors and sensors. Its compact design ensures portability, making it an essential addition to any technician's toolkit.

## Description

OTC Heavy-duty Logic Probe Tester Multi-functional design allows testing range of 3-26 volts. The bright red and green LEDs interpret voltage signals such as ground, power, and frequency. The tests fuel injectors, solenoids, presence of serial data, and Tach reference signals. The output tests on MAF, Cam, Crank, Hall Effect VRS sensors and more. The high impedance input compatible with computer circuits and sensors. Its features and benefits include air bag safe, 12 feet, heavy-duty twin clip red coil cord lead, checks 6-12-24-volt systems, ergonomic slim designed clear handle, positive contact molded strain relief and heavy-duty stainless steel probe with insulated shaft.

Review: OTC 3631 HEAVY DUTTY LOGIG PROBE TESTER - Well I needed a good smart tester as I work on motorcycles for a living I already have one I paid $100 for 20 years ago I bought from the tool truck. I also repair bikes on the side and needed one for at home but didn't want to spend another $100 I needed one that could check for pulse like from the main and pick up coils & fuel injectors also it had to be safe for testing air bags and LED lighting systems as well it had to be cost effective This test light fit the bill and has bright green and red LED'S to indicate ground & positive it will indeed show pulse It works very well the price was right the point is really sharp and it's made by OTC. OTC is one of the makers who produce some other high end quality test equipment for the magor brands like MATCO & USA TOOLS I know this because they made the $100 one I bought 20 years ago off a MATCO truck and it still works great The only thing different between the 2 is the price and the $100 test light has another red LED to shows you have power going to the test light from the battery and this one do's not. But that's not a big deal. Very happy with my purchase
Review: Great tool - Made well,works well,buy it you will like it.

## Features

- Multi-functional design allows testing range of 3-26 volts
- Bright red and green LEDs interpret voltage signals such as ground power and frequency
- Tests fuel injectors solenoids presence of serial data and Tach reference signals
- Output tests on MAF cam crank hall effect VRS sensors and more

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001GZH1C8 |
| Best Sellers Rank | #368,646 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #448 in Circuit Testers |
| Brand Name | OTC |
| Color | Red |
| Customer Reviews | 4.6 4.6 out of 5 stars (475) |
| Global Trade Identification Number | 00731413505744 |
| Included Components | Product & Instructions Guide |
| Item Dimensions | 2.2 x 13.6 x 2 inches |
| Item Weight | 1 Grams |
| Manufacturer | OTC |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 3 Volts |
| Model | 3631 |
| Part Number | 3631 |
| Power Source | Battery Powered |
| Style Name | Handheld |
| UPC | 731413505744 |
| Unit Count | 1.0 Count |
| Warranty Description | One (1) year limited warranty |

## Product Details

- **Brand:** OTC
- **Color:** Red
- **Item Weight:** 1 Grams
- **Power Source:** Battery Powered
- **Style:** Handheld

## Images

![3631 Heavy-Duty Logic Probe Tester , Red - Image 1](https://m.media-amazon.com/images/I/71KjqNHLnVL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ OTC 3631 HEAVY DUTTY LOGIG PROBE TESTER
*by R***T on September 22, 2015*

Well I needed a good smart tester as I work on motorcycles for a living I already have one I paid $100 for 20 years ago I bought from the tool truck. I also repair bikes on the side and needed one for at home but didn't want to spend another $100 I needed one that could check for pulse like from the main and pick up coils & fuel injectors also it had to be safe for testing air bags and LED lighting systems as well it had to be cost effective This test light fit the bill and has bright green and red LED'S to indicate ground & positive it will indeed show pulse It works very well the price was right the point is really sharp and it's made by OTC. OTC is one of the makers who produce some other high end quality test equipment for the magor brands like MATCO & USA TOOLS I know this because they made the $100 one I bought 20 years ago off a MATCO truck and it still works great The only thing different between the 2 is the price and the $100 test light has another red LED to shows you have power going to the test light from the battery and this one do's not. But that's not a big deal. Very happy with my purchase

### ⭐⭐⭐⭐⭐ Great tool
*by R***S on September 9, 2024*

Made well,works well,buy it you will like it.

### ⭐⭐⭐⭐⭐ Great buy for Techs
*by G***. on June 14, 2022*

Product works great, even for everyday use in a shop setting. Durable . Great price

## Frequently Bought Together

- OTC 3631 Heavy-Duty Logic Probe Tester , Red
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- OTC 3633 Mini-Coil Cord Circuit Tester , Red

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-25*