---
product_id: 253279308
title: "Triplett ET30 Non-Contact Magnetic Field Detector - AC/DC/Permanent"
brand: "triplett"
price: "£17.60"
currency: GBP
in_stock: true
reviews_count: 10
category: "Triplett"
url: https://www.desertcart.co.uk/products/253279308-triplett-et30-non-contact-magnetic-field-detector-ac-dc-permanent
store_origin: GB
region: United Kingdom
---

# Low battery indicator with included AAA batteries Built-in LED flashlight for low-light use Detects AC/DC & permanent magnetic fields Triplett ET30 Non-Contact Magnetic Field Detector - AC/DC/Permanent

**Brand:** triplett
**Price:** £17.60
**Availability:** ✅ In Stock

## Summary

> 🧲 Never miss a magnetic moment—detect with precision and confidence!

## Quick Answers

- **What is this?** Triplett ET30 Non-Contact Magnetic Field Detector - AC/DC/Permanent by triplett
- **How much does it cost?** £17.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/253279308-triplett-et30-non-contact-magnetic-field-detector-ac-dc-permanent)

## Best For

- triplett enthusiasts

## Why This Product

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

## Key Features

- • **Battery Life Awareness:** Stay ahead of downtime with a low battery indicator and included AAA batteries for immediate use.
- • **LED Flashlight On-Demand:** Illuminate dark workspaces without carrying extra tools—lightweight and efficient.
- • **Built-In Self-Test Magnet:** Confidently verify functionality anytime with the integrated self-test feature.
- • **Versatile Industrial Testing:** Perfect for troubleshooting solenoid valves, relays, and speaker coils across machinery and vehicles.
- • **Instant Magnetic Field Detection:** Non-contact sensing for AC, DC, and permanent magnets—no guesswork, just results.

## Overview

The Triplett ET30 is a compact, battery-powered non-contact magnetic field detector designed to quickly identify AC, DC, and permanent magnetic fields. Ideal for professionals managing pneumatic, hydraulic, and electrical equipment, it features a built-in self-test magnet, LED flashlight, and low battery indicator. Ready to use out of the box with included AAA batteries, the ET30 ensures reliable troubleshooting without confusion—just magnetic clarity.

## Description

The Triplett ET30 Magnetic Field Detector quickly determines the presence of magnetic fields (AC/DC/Permanent). It can test solenoid valves in pneumatic/hydraulic control equipment, relays with coils, electrically controlled solenoid valves in vehicles/machinery/oil burners, and audio speaker coils. It features a built-in self test magnet, LED flashlight, and a low battery indicator. Includes (2) AAA batteries.

Review: Magnet detector not voltage detector - Excellent magnet detector it helps me to trouble shoot solenoids, for people who doesn’t know this is not a voltage detector.
Review: Don't waste your money - Poor quality all around. Package a pain to open, battery compartment opening very difficult to figure out and, oh yeah, it does NOT detect any magnetic fields. Poor value, does not function, difficult to use. Flashlight works ok, but doesn't stay on unless you keep your finger on the button.

## Features

- Non-Contact Detector quickly determines the presence of magnetic fields (AC magnetic fields and DC/Permanent magnets)
- Test solenoid valves in pneumatic/hydraulic control equipment and audio speaker coils
- Built-in self-test magnet and LED flashlight
- Low battery indicator
- Includes (2) AAA batteries
- This is only a magnetic field/magnet tester NOT a non-contact voltage (NCV) detector

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08BTQ4YSZ |
| Best Sellers Rank | #88,820 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #144 in Circuit Testers |
| Brand | Triplett |
| Brand Name | Triplett |
| Color | ET30 |
| Customer Reviews | 3.7 out of 5 stars 85 Reviews |
| Included Components | ET30 Magnetic Field Detector, AAA Batteries (2) |
| Item Dimensions | 3.5 x 1.5 x 10.5 inches |
| Item Weight | 0.2 Pounds |
| Item dimensions L x W x H | 3.5 x 1.5 x 10.5 inches |
| Lower Temperature Rating | 32 Degrees Fahrenheit |
| Manufacturer | Triplett Test Equipment and Tools |
| Measurement Type | Magnetic Field Detector |
| Model | ET30 |
| Part Number | ET30 |
| Power Source | Battery Powered |
| Style | Standard |
| Style Name | Standard |
| UPC | 614395002336 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 104 Degrees Fahrenheit |
| Warranty Description | 1-Year Manufacturer |

## Product Details

- **Brand:** Triplett
- **Color:** ET30
- **Item Weight:** 0.2 Pounds
- **Power Source:** Battery Powered
- **Style:** Standard

## Images

![Triplett ET30 Non-Contact Magnetic Field Detector - AC/DC/Permanent - Image 1](https://m.media-amazon.com/images/I/71OirPk4GyL.jpg)
![Triplett ET30 Non-Contact Magnetic Field Detector - AC/DC/Permanent - Image 2](https://m.media-amazon.com/images/I/61wktbeyGeL.jpg)
![Triplett ET30 Non-Contact Magnetic Field Detector - AC/DC/Permanent - Image 3](https://m.media-amazon.com/images/I/71WE9QaotvL.jpg)
![Triplett ET30 Non-Contact Magnetic Field Detector - AC/DC/Permanent - Image 4](https://m.media-amazon.com/images/I/91oXXBu760L.jpg)
![Triplett ET30 Non-Contact Magnetic Field Detector - AC/DC/Permanent - Image 5](https://m.media-amazon.com/images/I/71RxqKxizyL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Magnet detector not voltage detector
*by A***Z on November 2, 2025*

Excellent magnet detector it helps me to trouble shoot solenoids, for people who doesn’t know this is not a voltage detector.

### ⭐ Don't waste your money
*by R***T on November 8, 2025*

Poor quality all around. Package a pain to open, battery compartment opening very difficult to figure out and, oh yeah, it does NOT detect any magnetic fields. Poor value, does not function, difficult to use. Flashlight works ok, but doesn't stay on unless you keep your finger on the button.

### ⭐⭐⭐⭐⭐ Magnet detector, not voltage!
*by M***O on March 15, 2026*

When you but magnet detector, why you try to detect voltage with it?

## Frequently Bought Together

- Triplett ET30 Non-Contact Magnetic Field Detector - AC/DC/Permanent
- Extech MD10 Non-Contact Magnet Detector with Built-in Flashlight
- Solenoid Valve Magnet Tool #TLMKC, Solenoid Valve Troubleshooting Magnet 18 mm, Fits All Common Industry Valves, Solenoid Magnet

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-30*