---
product_id: 346806525
title: "Calterm 66331 Tru-Spark Ignition Firing LED Indicator, Adjustable Sensitivity"
brand: "calterm"
price: "E£ 162"
currency: EGP
in_stock: false
category: "Calterm"
url: https://www.desertcart.com.eg/products/346806525-calterm-66331-tru-spark-ignition-firing-led-indicator-adjustable-sensitivity
store_origin: EG
region: Egypt
---

# Calterm 66331 Tru-Spark Ignition Firing LED Indicator, Adjustable Sensitivity

**Brand:** calterm
**Price:** E£ 162
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Calterm 66331 Tru-Spark Ignition Firing LED Indicator, Adjustable Sensitivity by calterm
- **How much does it cost?** E£ 162 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/346806525-calterm-66331-tru-spark-ignition-firing-led-indicator-adjustable-sensitivity)

## Best For

- calterm enthusiasts

## Why This Product

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

## Description

Calterm 66331 Tru-Spark Ignition Firing LED Indicator, Adjustable Sensitivity : desertcart.in: Car & Motorbike

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000JFHMPC |
| Brand Name | Calterm |
| Colour | Red |
| Customer Reviews | 4.2 4.2 out of 5 stars (355) |
| Global Trade Identification Number | 00046494020230 |
| Item Dimensions | 5.6 x 15 x 3.6 Centimeters |
| Manufacturer | Calterm |
| Measurement Type | Voltage |
| Model Number | 66331 |
| Part Number | 66331 |
| Power Source Type | Battery Powered |
| Specification Met | CE, ETL, RoHS, UL |
| UPC | 971473127474 046494020230 521227771189 956257381846 |
| Unit Count | 1.00 Count |

## Product Details

- **Brand:** Calterm
- **Colour:** Red
- **Item dimensions L x W x H:** 5.6 x 15 x 3.6 Centimeters
- **Power Source:** Battery Powered
- **Specification Met:** CE, ETL, RoHS, UL

## Images

![Calterm 66331 Tru-Spark Ignition Firing LED Indicator, Adjustable Sensitivity - Image 1](https://m.media-amazon.com/images/I/31O+6q1pNAL.jpg)
![Calterm 66331 Tru-Spark Ignition Firing LED Indicator, Adjustable Sensitivity - Image 2](https://m.media-amazon.com/images/I/41fbaze1p3L.jpg)
![Calterm 66331 Tru-Spark Ignition Firing LED Indicator, Adjustable Sensitivity - Image 3](https://m.media-amazon.com/images/I/31r1UaKbJ8L.jpg)
![Calterm 66331 Tru-Spark Ignition Firing LED Indicator, Adjustable Sensitivity - Image 4](https://m.media-amazon.com/images/I/41imX8e9FbL.jpg)
![Calterm 66331 Tru-Spark Ignition Firing LED Indicator, Adjustable Sensitivity - Image 5](https://m.media-amazon.com/images/I/71R5oKpSNAL.jpg)

## Questions & Answers

**Q: Does clamp on?**
A: Hi, no it's not for clamping on, it's for detecting for a spark and so you just touch it on the ht lead

**Q: does it work on small engine 4-cycle, 12V**
A: Our Service  dept use this all the time on small engines.  You do have to properly adjust the dial on the unit for small engines. We use as a quick test.

**Q: does this actually detect if the plug wire is pulled loose from the plug itself?**
A: Probably not, but a good visual inspection should. I use it to narrow down suspect cylinders that have a misfire such as a defective coil or wire. I have also found plugs that arc inside the plug boots.

**Q: Will this work on fuel injectors ?**
A: No- Just  ignitions. Fuel injectors are low voltage.

## Frequently Bought Together

- Calterm 66331 Tru-Spark Ignition Firing LED Indicator, Adjustable Sensitivity, Green,Red
- Lisle 19380 Spark Tester
- allsun Automotive Spark Ignition Tester 6-24V Pen Engine Indicator Spark Plug Car Wires Coils Diagnostic Tool Auto Voltage Cable Detector Small Engine Tools

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**Shop now:** [https://www.desertcart.com.eg/products/346806525-calterm-66331-tru-spark-ignition-firing-led-indicator-adjustable-sensitivity](https://www.desertcart.com.eg/products/346806525-calterm-66331-tru-spark-ignition-firing-led-indicator-adjustable-sensitivity)

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*Product available on Desertcart Egypt*
*Store origin: EG*
*Last updated: 2026-10-30*