Teng Tools Circuit Tester Pen with Sharp Probe and Ground Lead for Checking Electrical Circuits - Lightweight 40 g - 9850
Measuring Instruments · 9850
Circuit Tester Pen
With Sharp Probe and Ground Lead for Checking Electrical Circuits · Lightweight 40 g
- Fast US dispatch from our Fort Worth, Texas warehouse
- Genuine Teng Tools — professional-grade, designed in Sweden
- Secure checkout — encrypted payment, trusted providers
- Backed by guarantee — built to last a working lifetime
Why this one
Sharp probe tip
Features a precision probe designed to make positive contact with terminals, connectors, and wire ends inside junction boxes and panels.
Ground lead with clip
Includes a dedicated ground wire terminated with a secure spring-loaded jaw that attaches firmly to a known ground point, completing the test path so you get a reliable reading every time.
Lightweight and portable
At just 40 g (approximately 1.4 ounces), this tool adds virtually no bulk to your daily carry.
Designed for everyday use
Built as a go-to diagnostic instrument for electricians, automotive technicians, HVAC installers, and serious DIY enthusiasts.
Teng Tools quality
Backed by Teng Tools' commitment to professional-grade hand tools, this tester is engineered to withstand daily use in demanding shop and field environments.
Read the full description
When you need to know whether a circuit is live before you touch it, reach for the Teng Tools test pen. This pen-style diagnostic instrument features a sharp probe tip on one end and a ground lead on the other, giving you a fast, reliable way to check electrical circuits in automotive, residential, and commercial applications.
The pointed probe reaches into cramped junction boxes, fuse panels, and dashboard cavities where larger instruments cannot go. A spring-loaded jaw on the ground lead locks onto any convenient ground point, completing the test path without requiring a second pair of hands.
Weighing only 40 g (about 1.4 ounces), this tool is light enough to ride in a shirt pocket all day. Its slim profile keeps it out of the way until the moment you need a quick confirmation that power is present — or safely absent — at a given point in the circuit.
Whether you are an automotive technician tracing a phantom draw, an electrician verifying a breaker is off, or a homeowner checking an outlet before swapping a receptacle, this Teng Tools instrument delivers a clear answer without complicated setup. No menus, no mode switches — just probe, ground, and read.
Add it to your everyday carry and stop guessing about what is hot and what is not.
Specifications
| Type | Service Tools |
|---|---|
| Category | Measuring Instruments |
| Part number | 9850 |
Data sheet
Full details from Teng Tools. Download PDF
Lifetime warranty
Send a photo and your order number. Same-day shipping on replacements.
Ships from Texas
From our Fort Worth warehouse.
Questions?
Call (817) 767-3392.
Shipping
Free shipping on orders over $99. Orders are stocked, picked and shipped from our warehouse in Fort Worth, Texas — orders placed on business days ship same-day wherever possible.
Lifetime warranty
Teng Tools hand tools are backed by a lifetime warranty against manufacturing defects. Screwdriver bits and socket bits are consumables and are guaranteed to meet dimensional standards. Torque wrenches and air tools can be serviced and recalibrated on request — contact us to arrange it.
Returns
Not right for the job? Contact us within 30 days of delivery and we'll sort out a return or exchange. Tools must be unused and in their original packaging. Warranty claims are handled separately — a defective tool is our problem, not yours.
Why Teng Tools?
Swedish Design Since 1985
Trusted in 30+ countries. Designed in Sweden, built to ISO and DIN standards.
Shipped Fast from Texas
US warehouse in Fort Worth, so orders move fast. TAA approved for government and defense.
Lifetime Warranty
Something goes wrong? Send a photo and your order number — same-day shipping on replacements.
The Devil Is in the Detail
Satin-finish wrenches, through-blade screwdrivers, heavy-gauge storage — built to last.