Best Voltage Testers of 2025

"I first discovered this tool on Holmes on Holmes. Mike Holmes used it to identify live wiring in substandard setups. As an experienced DIYer, I’ve done extensive electrical work, including a full kitchen and bathroom remodel. The only time I’ve been shocked was due to poor wiring from someone else. This tool provides peace of mind. I simply wave it near wires, and it alerts me with a tone and bright light if they’re live. The probe’s design allows it to fit easily into outlets, letting me know if I’ve got the right breaker. This Fluke device is high quality and reliable. I urge everyone to use it before doing any electrical work to stay safe."

"The Fluke quality is undeniable. It detects live wiring effortlessly and helps differentiate between hot and neutral wires in standard Romex. I always follow up with a standard meter as a double-check after using this tool, and it’s been accurate every time, except for a couple of wall sockets that didn't alert. Overall, it has been a great addition to my toolkit."

"This is a fantastic little device. I wish I had bought one years ago. It quickly helped me diagnose faulty tree lights, and I know it will be essential for future electrical work. I feel much safer using it as a precaution."

"I bought several for our younger technicians. They're easy to use and work on both low and high voltage, ensuring safety while troubleshooting service calls. Not as heavy duty as another brand I have, but well made for the price. Plus, they came with the batteries needed!"

"I should have purchased a voltage tester like this much earlier! Using this tester is so much simpler and safer than my old voltmeter for checking live wires."

"As someone working in the trades, I use this tool for safety. It beeps and has red and green lights, which is great. Sometimes, I need to test twice for confirmation, but overall, it does the job just fine."

"I'm very pleased with my Klein tools voltage tester. I recommend it for DIY projects at home; it's an essential tool for safety and efficiency. I wish I had gotten it sooner!"

"This pen is a great size for checking household voltage. It's so easy to use—just insert the battery, press the button, and it shows green for no current and red for hot wires. It's worth the investment!"

"I have several testers, but this Klein is my favorite. Others beep too early or require fiddling with dials. This one lights green when safe and beeps red for hot wires, giving clarity during use. Highly recommended!"

"I needed a voltage tester for my bathroom updates, and the Klein Tools ET60 caught my attention. I appreciate that it doesn't require a battery and operates off the power it's testing. The display lights up if the wires are hot, which is exactly what I needed. It's a simple and reliable tool for my DIY projects."

"Using this tester has been a breeze for me. It simply tells me yes or no and shows how much electricity is present. I find it very user-friendly."

"I use this tester almost daily because it's one of the most accurate when paired with a differential. It has a rubberized body and is compact, but I wish it came with a case for easier transport."

"I've recently added the Klein Tools NCVT3P Dual Range Non-Contact Voltage Tester to my toolkit, and it has quickly become a must-have for my electrical work. The dual range detection from 12-100V AC to 100-1000V AC makes it incredibly versatile for various tasks. I love how easy it is to use—just press a button and it powers off automatically. The multiple indicators, including an audible alarm and a flashlight, ensure I'm always aware of voltage, even in low light. Its robust construction gives me confidence in its durability, and the pocket clip is a nice touch for portability. Overall, it's an investment that pays off in safety and efficiency."

"As someone who uses these types of indicators frequently, I find that the Klein NCV has the same issue as others: the probe end is too short. I often work with 250V plugs like those for dryers and ovens, and it can be a challenge. However, it does what it claims and is very lightweight. While I feel the average price of about $20 is slightly high, the minimal flashlight feature is helpful when I need it most."

"This tool is a game-changer for me as an inexperienced homeowner tackling electrical work. It's incredibly affordable and straightforward to use—I just turn it on and touch it to the wire to check for heat. It makes my DIY projects much safer, and I can't recommend it enough. It's simply amazing!"

"I was impressed with the Klein Tools NCVT2PKIT. The non-contact voltage tester allows for safe and accurate detection of voltage without direct contact. The LED indicators make it easy to identify live circuits, while the outlet tester helps verify wiring conditions. The compact design fits comfortably in my hand, and the build quality is excellent. This kit is a must-have for anyone dealing with electrical work!"

"As a new homeowner, I found this kit incredibly helpful. It allowed me to identify hot wires in my basement and gave me confidence in my DIY projects. The ease of use and value it provides make it a necessary addition to my toolkit. I highly recommend it to others!"

"I purchased this kit for replacing an attic fan. Using the meter, I was able to ensure the correct breaker was flipped before working on the wiring. It gave me full confidence that I wasn't dealing with live wires. This kit was definitely worth every penny!"

"I found the quality workmanship and fair price incredibly satisfying for my DIY projects."

"This tool is not the only one to check if a wire is live, but it gives me a sanity check. I can easily confirm if that breaker is off."

"The tool is great and easy to use. It saves me a lot of time, although I was a bit annoyed that the included batteries were dead upon arrival."

"It's a Klein! I've always had great success with Klein tools, and this one is no exception. Great response, accurate, and comfortable in my hand. You won't be disappointed!"

"I needed a multimeter to check my outdoor lights, and this meter does exactly what I need. I’m very happy with it; it’s just right!"

"This is a fantastic digital clamp meter. It has a maximum range of 400A 600V 20 ohm, and the voltage and current settings are super easy to select. The display is clear and easy to read!"

"I find this product reliable for checking safe isolation and batteries. It's affordable and I trust it more than a voltage pen."

"This little tester is perfect for my needs. I appreciate its compact size, making it easy to carry around."

"As an electrician for 35 years, I can say this is a practical tool for everyday use at home."

"I used this to find a mid-line break in my outbuilding's wiring. I can handle electrical work, but I often encounter unexpected issues. The AstroAI helped me identify the live wire among multiple lines, and I was thrilled with its performance. Compared to another unit I tried, this one was 300% better. HIGHLY RECOMMENDED."

"I just received this voltage detector, and it feels solid and easy to use. It only requires one AAA battery, and I appreciated that it came with two Duracells. The display is user-friendly, changing color to indicate voltage presence, and it successfully differentiates between hot and neutral wires. I've ordered another one for my girlfriend's toolbox as I find it one of the nicer models I've used."

"I’m really enjoying this voltage tester. It's been incredibly useful while doing simple electrical work like hanging fixtures. Instead of juggling a traditional voltage tester, I can just hold this device near the wires and get immediate feedback. Its convenience while on a ladder is invaluable, making it worth much more than its cost."