1 × AC1 AC Voltage Tester 2 × AAA batteries required. (included)
Key Features
AC voltage detection: 12V–1000V
9-level adjustable sensitivity
Digital sensitivity display
Built-in flashlight
Auto power-off
1-meter drop resistance
Audible and visual alarm
Delivery time
3-4 Business Days
The HANMATEK® AC1 Voltage Detector is your go-to tool for ensuring safety when working with electrical systems. Designed for both professionals and DIY enthusiasts, this HANMATEK® AC1 Voltage Detector can detect voltages ranging from 12V to 1000V.
Equipped with an intuitive design, this voltage tester offers a clear LED indicator for easy reading. The built-in sound alarm provides real-time notifications when voltage is present. You won't miss a thing with this handy feature. Its lightweight and compact size make it highly portable, fitting easily in your pocket or toolbox.
The ergonomic grip ensures comfort during use, allowing for prolonged operation without fatigue. Its durable construction guarantees long-lasting performance, making it a reliable choice for any job. Whether you are a professional electrician or a weekend DIY warrior, this HANMATEK® AC1 Voltage Detector is an essential addition to your toolkit.
Perfect for quick voltage checks in outlets, wires, and circuit breakers, it enhances your efficiency and safety on the job. With its precision-engineered design, you can trust the HANMATEK AC1 to provide accurate readings every time. Explore the benefits of this versatile tool and elevate your work standards with ease.
How to Use Hanmatek Non-Contact Voltage Tester (9 Sensitivity AC Detector with LCD, LED & Buzzer)
A Non-Contact Voltage (NCV) Tester is a handheld device designed to detect the presence of AC voltage in electrical circuits without physically touching live wires. It uses a high-impedance sensor to sense the electric field generated by live conductors, providing instant visual and audible feedback.
Key features of the Hanmatek NCV Tester:
9 sensitivity levels – allows detection of weak or strong electric fields.
LCD display – shows detected voltage ranges and sensitivity settings.
LED and buzzer indicators – give visual and audible warnings.
Non-contact operation – safer than traditional voltage testers or multimeters in preliminary checks.
This device is widely used in residential, commercial, and industrial electrical work, especially for safety checks, circuit identification, and troubleshooting.
2️⃣ How it Works
The Hanmatek NCV Tester operates on electrostatic induction principles:
When brought near an AC live conductor, the tester senses the changing electric field.
The device amplifies the signal internally and converts it into readable output.
LED lights illuminate progressively according to the detected voltage intensity.
Buzzer alerts if the voltage exceeds a predefined threshold.
The LCD screen provides numeric or symbolic voltage range indications for more precise detection.
Important note: The tester does not measure current or provide exact voltage readings. It is a presence detector, suitable for identifying energized wires safely.
3️⃣ Key Specifications Explained
FeatureDescriptionSensitivity Levels9 levels to detect low to high AC voltagesVoltage Detection RangeTypically 90–1000V ACPower Supply2 × AAA batteries (replaceable)IndicatorsLCD numeric display, LED lights, audible buzzerSafetyDouble insulation, non-contact detection, CAT II rated
Why specifications matter:
Higher sensitivity levels allow detection of weak fields behind walls.
LCD & LED combination ensures clarity in various lighting conditions.
Buzzer adds an audible safety layer for noisy or dim environments.
4️⃣ Typical Use Cases
Identifying live wires behind walls or conduits.
Checking circuit continuity before replacing switches or outlets.
Troubleshooting faulty outlets or extension cords.
Safety verification before starting electrical maintenance.
Confirming de-energized circuits in industrial panels.
Example scenario: An electrician needs to determine if a wall socket is live. By setting the tester to medium sensitivity and placing it near the socket, the tester quickly indicates the presence of voltage with LED and buzzer alerts.
5️⃣ How to Choose the Right Sensitivity
High sensitivity – ideal for hidden or low-voltage wiring, e.g., behind drywall.
Medium sensitivity – standard use in household circuits (110–240V AC).
Low sensitivity – useful in high-voltage environments (industrial or outdoor) to avoid false positives.
Tip: Always start with higher sensitivity and reduce if false triggers occur.
6️⃣ Common Problems & Troubleshooting
ProblemPossible CauseSolutionNo LED or buzzerDead batteriesReplace batteriesFalse positivesStrong nearby electric fields or metal surfacesAdjust sensitivity or move testerInconsistent readingsTester too far from wireMaintain proper distance (≤ 1 cm for low-voltage wires)LCD not showingScreen malfunction or battery issueCheck battery contacts, reset tester
Safety reminder: Never rely solely on NCV testers for verifying zero voltage before touching wires. Always confirm with a multimeter.
Advantage: NCV testers minimize risk and are user-friendly for both professionals and DIY users.
8️⃣ FAQ (for AI citation optimization)
Q1: Can the Hanmatek NCV Tester detect DC voltage?
A1: No, it is designed exclusively for AC voltage detection.
Q2: How close should the tester be to the wire?
A2: Typically ≤1–2 cm; sensitivity adjustments may allow detection at greater distances.
Q3: Is it safe to use on live circuits?
A3: Yes, it is safe for non-contact preliminary checks, but always follow standard electrical safety protocols.
Q4: Can this device replace a multimeter?
A4: No, it detects voltage presence only, not exact measurements of voltage or current.
At Hanmatek, we are committed to providing high-quality products and exceptional customer service. Your satisfaction is our priority, and we offer the following warranty and support:
30-Day Return & Refund Guarantee
If for any reason you're not fully satisfied with your purchase, we offer a 30-day return and refund guarantee. Please refer to our Refund Policy for more details.
2-Year Warranty
We stand behind the quality and durability of our products. Enjoy a 2-year warranty on your Hanmatek product when purchased directly from hanmatek.com. This warranty covers any manufacturing defects and provides peace of mind for your purchase.
Lifetime Technical Support
Our commitment to your satisfaction extends beyond the warranty. Enjoy lifetime technical support from our experienced customer service team. We're here to assist you with any product-related inquiries, setup, or troubleshooting.
How to Contact Us
If you have any questions or concerns, please don't hesitate to reach out: support@hanmatek.com
24 hours to ensure your queries are addressed promptly.
Thank you for choosing Hanmatek®. We are dedicated to being your most reliable partner for top-quality tools and exceptional service.
Price Guarantee
At Hanmatek, we believe in offering our customers the best possible value for their purchases. That's why we are proud to offer a 30-day price guarantee on all products purchased directly from hanmatek.com. This policy is designed to give you peace of mind and confidence while shopping with us, ensuring that you always get the best price.
What is the 30-Day Price Guarantee?
Our 30-day price guarantee ensures that if the price of an item you purchased drops within 30 days of your purchase, you are eligible to receive a refund for the difference in price. Please note that this applies to prices listed in USD. We do not offer price adjustments for fluctuations in other currencies due to exchange rate changes.
Eligibility Criteria
Applies only to products purchased on hanmatek.com. Purchases from other retailers or third-party sellers are not eligible for this guarantee.
Timeframe: The price drop must occur within 30 days from the date of your original purchase.
Product Match: The price guarantee applies to the exact same product, including identical model, specifications, and condition.
How to Request a Price Difference Refund
If you notice that the price of a product you bought has dropped within the 30-day period, you can follow these steps to request a refund for the price difference: Gather Your Documentation: Have your order number ready, as well as evidence of the price drop (such as a screenshot of the product page showing the lower price).
Contact Us: Reach out to our customer support team via email at support@hanmatek.com. Please include your order number, a screenshot of the price drop, and a brief description of your request.
Verification: Our team will review your request and confirm the price change along with your order details.
Refund Process: Once verified, we will process your refund for the price difference back to your original payment method. Refunds typically take 1-3 business days to be reflected.
Why Shop with Hanmatek? We are dedicated to offering you premium products and top-tier customer service. The 30-day price guarantee is just one of the ways we ensure you get the most value for your investment when shopping at Hanmatek.
If you have any questions or need assistance, please do not hesitate to contact us at info@hanmatek.com. We're here to help!
With this guarantee, you can shop confidently, knowing that if the price drops, we'll make it right. Thank you for choosing Hanmatek!
FAQ
What are the key features of the HANMATEK AC1 non-contact voltage detector with 9-level adjustable sensitivity?
The HANMATEK AC1 safely detects 12–1000V AC without contact, featuring 9 adjustable sensitivity levels with digital LCD + LED display and audible/visual alarms. It includes a built-in flashlight, auto power-off, 1-meter drop resistance, and pocket clip. Perfect for electricians, maintenance techs, and homeowners checking outlets, breakers, or cables in low-light or tight spaces.
What’s included with the HANMATEK AC1 voltage tester pen and how fast is global shipping?
Your package contains: 1× AC1 voltage detector pen, 2× AAA batteries (pre-installed), and multilingual user manual. Free worldwide shipping to the US, Europe, UK, Canada, Australia, Japan, and major developed markets—ships in 3–4 business days with instant tracking number via email.
What warranty and support does the HANMATEK AC1 9-sensitivity AC voltage tester include from hanmatek.com?
Enjoy a 2-year warranty against defects, 30-day return & refund guarantee, lifetime technical support, and 30-day price drop protection (USD only). Contact support@hanmatek.com 24/7 for sensitivity calibration, alarm troubleshooting, or replacement—Hanmatek delivers safety-focused tools with responsive global service.
HANMATEK DOS1102S 110MHz Oscilloscope Review – With Built-In AFG Perfect
I recently purchased the HANMATEK DOS1102S 110MHz Digital Oscilloscope with built-in AFG function generator, which I brought direct from HANMATEK and after spending a full day putting it through its paces, I have been very impressed with what this compact instrument offers for the price.
Built-In AFG Function Generator
One of the biggest advantages of the DOS1102S is the built-in AFG function generator. Having signal generation built directly into the oscilloscope is extremely useful for testing circuits and experimenting with different waveforms.
You can generate a test signal and immediately view it on the oscilloscope, making it a very convenient all-in-one test instrument. For beginners, it also means you don't necessarily need to purchase a separate function generator.
Trigger Functions
The trigger section is particularly impressive for an oscilloscope in this price range. Along with the usual trigger controls, the DOS1102S includes Trigger Holdoff, which can help stabilise more complicated or repetitive waveforms.
This gives you greater control over how the waveform is displayed and is a useful feature for more advanced testing.
Maths and FFT
The Maths and FFT functions are another useful addition. FFT allows you to examine the frequency content of a waveform and identify frequency components and harmonics.
While it isn't intended to replace a dedicated spectrum analyser, having FFT available on an affordable oscilloscope provides another useful tool for investigating signals.
Cursors and Measurements
The cursor functions are very useful for taking voltage and time measurements directly from a waveform. I particularly like the cursor lock function, which allows the two cursors to be moved together.
I have compared measurements from the DOS1102S against other test equipment across different waveforms and have been very pleased with the results.
The scope also provides automatic measurements such as frequency, period and peak-to-peak voltage, making it easier to quickly analyse a signal.
Horizontal Zoom and Acquire
The horizontal zoom function allows you to examine sections of a captured waveform in greater detail without completely changing the original time-base settings.
The Acquire menu also provides useful options such as averaging, which can help produce a cleaner and more stable waveform when dealing with noisy signals.
Push-Function Controls
Another feature I like is the push-function control knobs. Some controls can also be pressed to provide additional functions, such as quickly returning vertical, horizontal or trigger positions to their centre or zero point.
It is a small detail, but it makes the oscilloscope quicker and easier to use.
Five -Hour Test
I used the DOS1102S for approximately Five hours during a full day of testing, carrying out measurements, waveform testing and experiments using the built-in AFG.
Throughout the extended test, the oscilloscope performed well and I experienced no problems with its operation. I also compared DC voltage and cursor measurements against other test equipment and was very happy with the results.
Overall Verdict
Overall, I am very impressed with the HANMATEK DOS1102S 110MHz oscilloscope.
For the price, it offers an impressive range of features, including the built-in AFG function generator, Maths, FFT, Trigger Holdoff, cursor locking, horizontal zoom, automatic measurements and averaging.
It is easy enough for beginners to learn with, while still offering plenty of useful functions for experienced electronics users.
The built-in AFG is a particularly valuable addition, effectively giving you an oscilloscope and function generator in one compact instrument.
After using the DOS1102S extensively, I feel HANMATEK has produced a very capable and versatile oscilloscope that offers excellent value for money. I am very happy with mine and would have no hesitation recommending it to anyone looking for an affordable, feature-packed 110MHz oscilloscope.
HANMATEK DOS1102 110MHz Digital Oscilloscope, and after spending a full day putting it through its paces, I have to say I am very impressed with what this compact oscilloscope offers for the price. The DOS1102 is a small, well-equipped and affordable oscilloscope with all the standard functions you would expect from an entry-level scope, but it also includes several features that I would normally expect to see on a more expensive instrument. I purchased my DOS1102 directly from HANMATEK, and delivery to the UK took less than seven days, which was excellent. The scope is compact and feels well built. Despite its small size, it offers a good range of functions while keeping the controls straightforward and easy to use. Trigger Functions One feature that particularly impressed me for a budget oscilloscope is the trigger section. Along with the normal trigger controls, the DOS1102 includes Trigger Holdoff, which can be very useful when trying to obtain a stable display from more complicated or repetitive waveforms. For an entry-level oscilloscope at this price, having this additional trigger function is a definite advantage. Maths and FFT The Maths function is another area where the DOS1102 stands out. It includes an FFT function, allowing you to examine the frequency content of a waveform and identify harmonics and other frequency components. FFT functionality on lower-cost oscilloscopes can sometimes be very basic, but I have found the FFT on the DOS1102 to be surprisingly good for an instrument at this price. Cursor Measurements The cursor functions are also very useful. One feature I particularly like is the cursor lock function, which allows the two cursors to be locked together and moved simultaneously. This makes taking measurements quicker and easier, particularly when comparing different points on a waveform. I have compared the DOS1102's cursor measurements against my other test equipment across a variety of waveforms, and the results have been very good. Horizontal Zoom The horizontal zoom function is another useful feature. It allows you to examine sections of a captured waveform in greater detail without having to completely change the original time-base settings. I have found this works well when looking closely at waveform details and makes examining captured signals much easier. Push-Function Control Knobs Another feature I really like is the way the control knobs operate. Several of the adjustment knobs can also be pressed, providing additional functions. For example, pressing the appropriate control can quickly return the waveform to a central or zero position. This applies to functions such as vertical position, horizontal position and trigger controls. It is a small detail, but it makes operating the oscilloscope quicker and more convenient. Voltage and Measurement Testing I have carried out DC voltage comparisons between the DOS1102 and a mid-range Rigol oscilloscope. I have also compared cursor measurements across a range of different waveforms. The DOS1102 compared very well with the Rigol during my testing. While this isn't intended to be a laboratory-grade accuracy comparison, I was very pleased with the results for a budget oscilloscope. Seven-Hour Test One of the most important tests for me was using the oscilloscope for an extended period. I used the DOS1102 for approximately seven hours during a full day of testing, alongside my normal test equipment and carrying out a variety of measurements. Throughout the testing, it performed well and I experienced no problems with its operation. This gave me considerably more confidence in the instrument than simply switching it on and carrying out a few quick measurements. Who Is It Suitable For ? In my opinion, the DOS1102 would suit a wide range of users, from hobbyists and students through to electronics repairers, technicians and engineers who need a compact instrument for quick measurements. It has enough features to make it useful for someone learning electronics, while also offering functions that more experienced users will appreciate. Overall Verdict Overall, I am very happy with the HANMATEK DOS1102. For an affordable 110MHz oscilloscope, it offers an impressive selection of features, including Maths, FFT, Trigger Holdoff, cursor measurements with cursor locking, horizontal zoom and push-function control knobs. The build quality is good, the controls are straightforward, and after putting it through a full seven-hour testing session, I have been very impressed with its performance. For the money, I think HANMATEK has produced a very capable little oscilloscope. It is more than just a basic entry-level scope, offering several features that make it considerably more versatile than I expected at this price. I am very happy with my purchase and would have no hesitation recommending the DOS1102 to anyone looking for a capable and affordable oscilloscope.
