Two tools, one question: are you checking for live voltage or actually measuring it? For anyone working near outlets, junction boxes, or appliance cords, the choice between a full multimeter and an electrical test pen comes down to how much information you need. The Frentaly DM850 and the electricity test pen both come in new condition and both help you stay safe around live circuits, but they're built for different moments. Here's how to decide which one belongs in your kit.
Quick Verdict
Need a fast yes/no answer on whether a wire or outlet is live? The Electricity Test Pen is the tool to grab. Need to know the actual voltage, check resistance, verify a diode, or chase a DC circuit? The Frentaly DM850 multimeter does the broader job. Choose the pen for quick sweeps, choose the multimeter for troubleshooting.
At a Glance
| | Digital Multimeter Voltmeter DM850 | Electricity Test Pen |
| Price | $12.95 | $3.20 |
| Core job | Handheld multimeter with digital readings | Non-contact AC voltage detector |
| AC voltage handling | AC voltage ranges up to 600V | Detects AC voltage from 90 to 1000V |
| Reading feedback | 3-digit LCD with backlight and data hold | Red tip glow plus beep |
Where Each Wins
Frentaly DM850 wins when the job needs numbers rather than a simple hot-or-not signal. It includes measurement conveniences like auto-ranging and auto power off, which matter when you're moving between test points.
Electricity Test Pen wins when the question can be answered by touching the tip to a conductor. There's no direct metal contact, and the feedback is immediate.
Product Notes
Digital Multimeter Voltmeter DM850
The Frentaly DM850 puts a long list of test functions in one handheld body. Beyond AC and DC measurements, it covers resistance, continuity, diode testing, DC current, and transistor testing, with a 3-digit LCD, backlight, and data hold for easier reading. For someone who works on circuits or components, that range makes it a full multimeter instead of a single-use safety tool. The catch is its AC voltage ceiling: the listed AC ranges top out at 600V, so very high-voltage work isn't where it belongs. Its handheld form also takes up more space than a pen-style detector, so plan for bench or toolbox storage rather than pocket carry.
Electricity Test Pen Digital
This electricity test pen answers the most common safety question quickly: touch the tip to an outlet, terminal strip, or supply cord and the red glow plus beep tells you voltage is present. Its CAT II 1000V rating makes it a sensible companion for residential and light commercial checks. The limitation is practical rather than electrical: it runs on 2 AAA batteries that are not included, so you need batteries on hand before the first use. It also works as a presence detector, which is exactly what you want for a fast live-wire sweep.
Final Choice by Use Case
Pick the Frentaly DM850 when you need measurements, not just presence. It's the more complete troubleshooting meter for circuit and component checks. Pick the Electricity Test Pen when you want a quick live-wire sweep and own a multimeter for deeper checks. One gives you answers with numbers; the other gives you a quick, beeping confirmation that a circuit is hot.
