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⚡ Stay connected, stay ahead — test smarter with Southwire!
The Southwire Continuity PRO 40040S is a compact, reliable electrical tester featuring audible alerts for polarity and continuity, precise voltage detection up to 9 volts, and a lightweight design ideal for professionals and DIYers alike. Trusted by industry leaders, it delivers fast, accurate diagnostics across residential, automotive, and industrial applications.
| ASIN | B01ERZTIOM |
| Batteries | 1 Unknown batteries required. (included) |
| Best Sellers Rank | #285,986 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #369 in Circuit Testers |
| Brand | Southwire |
| Color | Remote |
| Date First Available | April 25, 2016 |
| Department | Unisex-Adult |
| Global Trade Identification Number | 00032886958397 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 6.7 ounces |
| Item dimensions L x W x H | 1 x 1 x 1 inches |
| Item model number | 40040S |
| Manufacturer | Southwire |
| Measurement Type | Ohmmeter |
| Min. Operating Voltage | 9 Volts |
| Power Source | 9v 1 |
| Product Dimensions | 1 x 1 x 1 inches |
| Style | Remote |
| UPC | 032886958397 |
| Upper Temperature Rating | 140 Degrees Fahrenheit |
S**.
Easy to use, compact and easy to carry, reliable
The Southwire Tester Continuity PRO 40040S is an outstanding tool for anyone needing a reliable and efficient continuity tester. From the moment I started using it, I was impressed by its accuracy and ease of use. The build quality is excellent, with a robust design that feels durable and long-lasting. The tester provides clear and quick readings, making it incredibly easy to diagnose continuity issues in various electrical circuits. The audible alert feature is particularly helpful, allowing me to focus on the task without constantly watching the display. One of the standout features is its versatility. Whether I'm working on wiring in my home, troubleshooting appliances, or handling automotive electrical systems, the Continuity PRO 40040S performs flawlessly. The compact size also makes it convenient to carry around and use in tight spaces. Overall, the Southwire Tester Continuity PRO 40040S has exceeded my expectations. It's an essential tool for both professional electricians and DIY enthusiasts, offering reliability, precision, and ease of use. Highly recommended for anyone needing a top-quality continuity tester!
A**T
Accurate and reliable
Worked really well identifying control wiring on a machine after a newbie cut all the wires numbers off after a wire pull. Worked great.
K**S
good product
a must have for finding short circuits
Y**A
It works great
It work really good haven’t have any issues with it.
J**X
Great tool for identifying wires, not just continuity.
We do a lot of low voltage work and this was a great purchase for us. We’re install motorized windows shades. We often are working in houses where the electrician ran the wires we are using and they often don’t get labeled. This lets us easily identify which window a particular wire in the mechanical room is going…to which is often a big deal for us!
C**D
As advertised
Well, it works. I was able find wiring connection about 60 feet apart through walls and underground. Unfortunately, take serious heed of the warning not to connect to live wire. I accidentally did and now the thing is dead. I would buy it again.
A**R
Faulty continuity tester
Received product okay, but the tester does not work install 9 volt battery, push on button , touch leads together, and also tried a short copper wire , no beeping sound , no light flashing. This item faulty, doesn't work
J**I
Worked great for tracking garage door opener sensor/button wires
I bought the Southwire Continuity PRO 40040S to trace the wires for my garage door sensors and button, and it worked out perfectly! This tester made it incredibly easy to identify and trace the wires without any hassle. It’s straightforward to use, even for a homeowner like myself without extensive electrical experience.
A**Z
Excelente para ubicar cables cuando se pierden las marcas, te ahorra mucho tiempo
R**E
Continuity test without the need for long wires. Helped me solve some wiring issues with my light switches that were far away from each other. Very useful tool!
A**O
Excelente herramienta, es un excelente complemento al multimetro, para trabajo en remodelación, mantenimiento e instalaciones de cableado nuevo.
K**.
Perfect for checking wiring and polarity at long distances visually and through tone.
S**V
Very useful, easy to use. Quick shipping by amazon
Trustpilot
3 days ago
1 week ago