---
product_id: 246507420
title: "BT-705A Inductive Pickup Clamp Lead for Automotive Multimeter - Tachometer Sensor for Spark Plug Wire, Measure Engine RPM (600~12,000 RPM), 10cm Detection Distance, 400Hz Max Frequency"
brand: "btmeter"
price: "NZ$73"
currency: NZD
in_stock: true
reviews_count: 8
category: "Btmeter"
url: https://www.desertcart.nz/products/246507420-bt-705a-inductive-pickup-clamp-lead-for-automotive-multimeter-tachometer
store_origin: NZ
region: New Zealand
---

# 400Hz max ignition frequency 10cm detection distance RPM range 600-12,000 BT-705A Inductive Pickup Clamp Lead for Automotive Multimeter - Tachometer Sensor for Spark Plug Wire, Measure Engine RPM (600~12,000 RPM), 10cm Detection Distance, 400Hz Max Frequency

**Brand:** btmeter
**Price:** NZ$73
**Availability:** ✅ In Stock

## Summary

> ⚙️ Unlock your engine’s secrets with precision and ease!

## Quick Answers

- **What is this?** BT-705A Inductive Pickup Clamp Lead for Automotive Multimeter - Tachometer Sensor for Spark Plug Wire, Measure Engine RPM (600~12,000 RPM), 10cm Detection Distance, 400Hz Max Frequency by btmeter
- **How much does it cost?** NZ$73 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/246507420-bt-705a-inductive-pickup-clamp-lead-for-automotive-multimeter-tachometer)

## Best For

- btmeter enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Operation:** Simple clamp design with directional arrow guarantees quick, error-free setup every time.
- • **Precision RPM Sensing:** Accurately measures engine speed from 600 to 12,000 RPM for reliable diagnostics.
- • **Universal Compatibility:** Standard 3/4 inch banana plugs ensure seamless connection with most automotive multimeters.
- • **Optimized Detection Range:** 10cm clamp detection distance lets you measure spark plug wire signals without hassle.
- • **High-Frequency Performance:** Supports ignition frequencies up to 400Hz, perfect for modern vehicle engines.

## Overview

The BTMETER BT-705A is a specialized inductive pickup clamp lead designed for automotive multimeters, enabling precise tachometer RPM measurements between 600 and 12,000. Compatible with popular BTMETER models, it features a 10cm detection range and supports ignition frequencies up to 400Hz, making it an essential tool for professional-grade engine diagnostics.

## Description

Buy BTMETER BT-705A Inductive Pickup Clamp Lead for Automotive Multimeter - Tachometer Sensor for Spark Plug Wire, Measure Engine RPM (600~12,000 RPM), 10cm Detection Distance, 400Hz Max Frequency: Tachometers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Works great but need the right multimeter - Works great with the AI770K multimeter
Review: Wildly Inaccurate - So far, very unreliable. Keeps losing connection with the meter. Readings are all over the place and very inconsistent. On some wires it won't read at all. On others, it reads intermittently and causes the meter to reset every few seconds. If I hold it a certain way and pull in just the right angle so it is pulling against the spark plug wire, I can get readings for a few seconds that seem to hover around a certain number +/- 200 rpm. So if the actual RPM is 1000, it will bounce all over the place from 0-5000, but if I hold my mouth just right and close one eye and pull on the cord and play with the angle, I can get it to read between 800-1200 consistently for up to a few seconds before it trips out. The only thing more frustrating than no tool is a bad tool.

## Features

- 【Important Note】This Signal Pickup needs to be used with multimeter or oscillograph for tach RPM measurement for vehicle engine. It’s recommend to use it with BTMETER BT-770K, BT-90K, BT-6688D automotive multimeter.
- 【Great Companion to Automotive DMMs】 Features with standard 3/4 inch banana plugs, which means makes it compatible with most automotive meters that features with signal input.
- 【Inductive Pickup Leads for BT-770K BT-90K】Perfectly work with BTMETER automotive multitester, such as: BT-770K, BT-90K, BT-6688D. To measure secondary end conductors of high voltage ignition coil spark .
- 【Easy to Use】Clamp the spark plug wire with the mark ”→“ on the inductive pickup tool pointing to the spark plug for engine speed measurement.
- 【Notice in Measurement】The distance between the spark plug and the clamp of the instrument must be less than 3.93 inch (10cm) during test, and the ignition frequency of the engine ignition system must be between 10Hz and 400Hz

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08D3MXZ5S |
| Best Sellers Rank | #343,713 in Automotive ( See Top 100 in Automotive ) #109 in Automotive Tachometers |
| Brand | BTMETER |
| Brand Name | BTMETER |
| Color | Black |
| Compatible Devices | BTMETER BT-770K, BT-90K, BT-6688D |
| Customer Reviews | 3.6 out of 5 stars 39 Reviews |
| Included Components | 1* BT Signal Pickup |
| Item Dimensions | 4.56 x 1.81 x 0.9 inches |
| Item Weight | 26 g |
| Item dimensions L x W x H | 4.56 x 1.81 x 0.9 inches |
| Manufacturer | BTMETER |
| Measurement Type | Multimeter |
| Model | BT-705A |
| Number of Items | 1 |
| Part Number | BT-705A |
| Power Source | Corded Electric |
| Style | ['Tool'] should be ['tool'] |
| Style Name | ['Tool'] should be ['tool'] |
| UPC | 783903693745 |
| Unit Count | 1 Count |
| Warranty Description | 1 Year Manufacturer |

## Product Details

- **Brand:** BTMETER
- **Color:** Black
- **Item Weight:** 26 g
- **Power Source:** Corded Electric
- **Style:** ['Tool'] should be ['tool']

## Images

![BT-705A Inductive Pickup Clamp Lead for Automotive Multimeter - Tachometer Sensor for Spark Plug Wire, Measure Engine RPM (600~12,000 RPM), 10cm Detection Distance, 400Hz Max Frequency - Image 1](https://m.media-amazon.com/images/I/61NkOkp00eL.jpg)
![BT-705A Inductive Pickup Clamp Lead for Automotive Multimeter - Tachometer Sensor for Spark Plug Wire, Measure Engine RPM (600~12,000 RPM), 10cm Detection Distance, 400Hz Max Frequency - Image 2](https://m.media-amazon.com/images/I/71b-ZhqgD0L.jpg)
![BT-705A Inductive Pickup Clamp Lead for Automotive Multimeter - Tachometer Sensor for Spark Plug Wire, Measure Engine RPM (600~12,000 RPM), 10cm Detection Distance, 400Hz Max Frequency - Image 3](https://m.media-amazon.com/images/I/61j+VPRoZIS.jpg)
![BT-705A Inductive Pickup Clamp Lead for Automotive Multimeter - Tachometer Sensor for Spark Plug Wire, Measure Engine RPM (600~12,000 RPM), 10cm Detection Distance, 400Hz Max Frequency - Image 4](https://m.media-amazon.com/images/I/71iQarAMTWL.jpg)
![BT-705A Inductive Pickup Clamp Lead for Automotive Multimeter - Tachometer Sensor for Spark Plug Wire, Measure Engine RPM (600~12,000 RPM), 10cm Detection Distance, 400Hz Max Frequency - Image 5](https://m.media-amazon.com/images/I/71eJbk0aUaL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great but need the right multimeter
*by D***M on October 9, 2026*

Works great with the AI770K multimeter

### ⭐ Wildly Inaccurate
*by A***N on September 30, 2025*

So far, very unreliable. Keeps losing connection with the meter. Readings are all over the place and very inconsistent. On some wires it won't read at all. On others, it reads intermittently and causes the meter to reset every few seconds. If I hold it a certain way and pull in just the right angle so it is pulling against the spark plug wire, I can get readings for a few seconds that seem to hover around a certain number +/- 200 rpm. So if the actual RPM is 1000, it will bounce all over the place from 0-5000, but if I hold my mouth just right and close one eye and pull on the cord and play with the angle, I can get it to read between 800-1200 consistently for up to a few seconds before it trips out. The only thing more frustrating than no tool is a bad tool.

### ⭐⭐⭐⭐⭐ Nice product
*by M***N on January 10, 2025*

Works great

## Frequently Bought Together

- BTMETER BT-705A Signal Pick-up Inductive Clamp Lead, Measure Tach Range 600 RPM ~ 12000 RPM
- BTMETER BT-770K Auto Ranging Automotive Multimeter for Dwell Angle Pulse Width Tach Temperature Duty Cycle Voltage Current Resistance Test
- BTMETER BT-605A AC/DC 600A Clamp-on Current Probe Amp Adapter for Work with Digital Multimeters

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-10-30*