Marmonix MTV 256 PRO Handheld Thermal Imager
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- 192 × 256 IR detector, 8–14 µm, 25 Hz, NETD 70 mK
- −20 °C to +400 °C, ±2 °C or ±2% accuracy
- Hot, cold and centre tracking, area measurement, 8 palettes
- 720P visual camera; 8 GB memory for 20,000+ JPG/MP4 files
- 2600 mAh battery (approx. 4 h), USB Type-C, 310 g
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Description
The Marmonix MTV 256 PRO thermal camera is a handheld infrared imager for electricians, HVAC technicians, maintenance teams and building inspectors. Its 192 × 256 detector (8–14 µm, 25 Hz, 70 mK) shows hot spots from −20 °C to +400 °C with ±2 °C or ±2% accuracy, while a 720P visual camera captures the scene for your report. Highest, lowest and centre-point tracking plus area measurement find the critical temperature without moving the camera.
It weighs 310 g, runs about 4 hours on a 2600 mAh battery, stores more than 20,000 images in 8 GB of memory and charges over USB Type-C. Compare it with the other models in our thermal cameras range, read the MTV 256 PRO user guide, or see the best thermal imaging cameras in 2026 buyer’s guide.
Why choose the MTV 256 PRO
- 192 × 256 infrared pixels: about 49,000 measuring points per image, enough detail to see individual breakers, terminals and cable lugs from a safe distance.
- 70 mK sensitivity at 25 Hz: small temperature differences show up clearly, and the image stays smooth while you scan a panel or a wall.
- Automatic hot/cold/centre tracking and area measurement: the camera marks the hottest and coldest points for you.
- 8 palettes: iron red, white hot, black hot, rainbow, red hot, high contrast, green hot and volcano, for different targets and reports.
- 720P visual camera (55° × 83° FOV): a matching daylight photo makes each thermal image easy to locate later.
- Built for the job: 310 g, USB Type-C, approx. 4 h battery, Arabic and English menus, and an operating range of −10 to +60 °C.
Applications
- Electrical maintenance: loose or overloaded connections in switchboards, MCCs, busbars, breakers and fuses
- HVAC and refrigeration: compressors, condenser coils, refrigerant lines, duct leaks and chilled-water valves
- Mechanical: overheating motors, bearings, couplings, gearboxes and belt drives
- Buildings: missing insulation, air leaks, moisture traces behind walls and roof defects
- Floor heating and plumbing: tracing hidden pipes and finding leaks without breaking tiles
- Electronics: hot components on PCBs and power supplies
More inspection methods are covered in our thermal imaging for industrial inspection guide.
MTV 256 PRO specifications
| Parameter | Value |
|---|---|
| Infrared resolution | 192 × 256 pixels |
| Spectral range | 8–14 µm |
| Frame rate | 25 Hz |
| Thermal sensitivity (NETD) | 70 mK @ 25 °C |
| Lens | 3.2 mm |
| Temperature range | −20 °C to +400 °C |
| Accuracy | ±2 °C or ±2% of reading |
| Measurement modes | Highest, lowest and centre point tracking; zone (area) measurement |
| Colour palettes | Iron red, white hot, black hot, rainbow, red hot, high contrast, green hot, volcano |
| Visual camera | 720P, field of view 55° × 83° |
| Storage | 8 GB internal memory, more than 20,000 pictures; JPG images and MP4 video |
| Interface | USB Type-C |
| Battery | 2600 mAh Li-ion, approx. 4 hours |
| Menu languages | English, French, German, Spanish, Arabic and more |
| Operating temperature | −10 °C to +60 °C |
| Storage temperature | −40 °C to +85 °C |
| Weight | 310 g |
| Dimensions | 115 × 170 × 300 mm |
Values are from the official Marmonix MTV 256 PRO datasheet, which you can download from the Downloads tab.
How to take an accurate thermal image
- Switch on and allow the camera a short time to stabilise, especially when moving from an air-conditioned room to outdoors.
- Aim at matt surfaces such as painted metal, cable insulation, plastic or concrete. Bare, shiny metal reflects surrounding heat and reads low, so measure a painted or taped spot next to it.
- Choose a palette: iron red for general work, white hot or high contrast for small differences.
- Scan the target and let hot/cold point tracking or the area box find the maximum temperature.
- For electrical panels, inspect under normal load, and compare similar phases or components against each other.
- Save the image (JPG) or a video (MP4), then copy the files to your PC over USB Type-C for the report.
MTV 256 PRO vs other Marmonix thermal cameras
| MTV 256 PRO | MTV-ONE PRO | HTV 340 LPRO | |
|---|---|---|---|
| Format | Handheld pistol-grip imager | Phone attachment (USB Type-C) | Handheld, 4.3″ touch screen |
| IR resolution | 192 × 256 | 256 × 192 | See product page |
| NETD | 70 mK | < 50 mK | ≤ 50 mK |
| Frame rate | 25 Hz | 15 Hz | 30 Hz |
| Temperature range | −20 to 400 °C | −15 to 600 °C | −20 to 600 °C |
| Accuracy | ±2 °C / ±2% | ±1 °C / ±1% | ±2 °C / ±2% |
| Visual camera | 720P | Uses phone | Yes, with fusion and picture-in-picture |
| Power | 2600 mAh, approx. 4 h | Phone powered | Two batteries, 8 h total |
| Best for | Everyday electrical, HVAC, building and floor-heating checks with one standalone tool | Technicians who already carry an Android phone | Higher-temperature process, plant and detailed inspections |
The earlier MTV-320 Pro Wi-Fi camera is discontinued; the MTV 256 PRO is the current handheld choice for general inspection. For quick spot readings without an image, see our thermometers range.
What’s in the box
MTV 256 PRO thermal camera, USB Type-C cable, and the accessories shown in the product photos. An Android app file is available in the Application tab and the datasheet in the Downloads tab.
Thermal camera supply in the UAE and GCC
Marmonix supplies the MTV 256 PRO across Dubai, Abu Dhabi, Sharjah and the rest of the UAE, as well as Saudi Arabia, Oman, Qatar, Kuwait and Bahrain, with local technical support. For project or bulk quotations, contact our sales team from this page.
MTV 256 PRO FAQ
What is the infrared resolution of the MTV-256 PRO?
The detector is 192 × 256 pixels (49,152 measuring points) in the 8–14 µm band, refreshed at 25 Hz with 70 mK thermal sensitivity. A separate 720P visual camera records the scene for reference.
What temperature range and accuracy does it have?
It measures from −20 °C to +400 °C with ±2 °C or ±2% of reading accuracy. That covers electrical panels, motors, bearings, HVAC systems, pipes and building surfaces. For targets above 400 °C, see the HTV 340 LPRO (up to 600 °C).
How many images can it store and how do I transfer them?
The internal 8 GB memory holds more than 20,000 pictures, saved as JPG with MP4 video. Connect the camera to a PC with the USB Type-C cable to copy files for reports.
How long does the battery last?
The built-in 2600 mAh Li-ion battery runs for about 4 hours per charge and recharges over USB Type-C.
Is the menu available in Arabic?
Yes. The interface supports English, French, German, Spanish, Arabic and other languages, which helps mixed teams on UAE and GCC sites.
MTV-256 PRO or MTV-ONE PRO: which should I buy?
Choose the MTV-256 PRO if you want a standalone pistol-grip camera with its own screen, visual camera and battery. Choose the MTV-ONE PRO if you prefer a compact attachment for an Android phone with a wider range (−15 to 600 °C).
Can it be used in UAE summer heat?
The rated operating range is −10 °C to +60 °C. For accurate readings, keep the camera out of direct sun when not in use, let it adjust after moving from an air-conditioned room, and avoid measuring shiny metal surfaces that reflect heat.
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Reviews (54)
Tlyer K. –
Great build quality. The MTV-256 PRO feels like a premium piece of equipment in your hand, not cheap plastic.
dennis.c.tech –
Solid performance from the MTV 256 PRO. It takes about 10 seconds to start up, which is okay, but could be slightly faster.
don_w_99 –
Five stars! The -20 to 400C range on the MTV 256 PRO means I can use it for both cold storage checks and boiler inspections.
Jaocb K. –
The MTV_256 PRO is a phenomenal tool for mechanical engineering. Spotted a misaligned belt generating excess friction instantly.
Lsia D. –
The white hot palette on the MTV-256 PRO is my absolute favorite for quickly scanning large warehouse electrical grids.
Benjaimn D. –
The MTV_256 PRO handles temperatures up to 400C easily, which is exactly what I needed for monitoring industrial baking ovens.
ryan.b.tech –
USB Type-C means I don’t have to carry extra proprietary chargers in my truck. The MTV 256 PRO is perfectly designed for modern techs.
justin.t.tech –
Good thermal sensitivity. The MTV-256 PRO easily detects drafty doors, but transferring files to my laptop via USB can be a bit slow.
george_l_82 –
The Marmonix MTV256 PRO is decent, but I find the 55×83 degree field of view a bit too narrow for small, cramped utility closets.
jessica.n.diy –
Awesome for finding missing wall insulation. I just wish the MTV_256 PRO came with a hard shell carrying case instead of just a box.
mrak_d88 –
Spot on accuracy. I verified the MTV 256 PRO with a contact thermometer and it was within 1 degree at 200°C.
PC_Builder_Jay –
Perfect for PC building and checking motherboard temps under load. The MTV 256 PRO is surprisingly detailed.
Pual H. –
I love the dual camera feature. Blending the thermal with the 720P visual on the MTV_256 PRO makes reporting to clients a breeze.
Jhon D. –
The MTV-256 PRO is fantastic for checking electrical panels. The 192×256 resolution is crisp and makes identifying hot breakers very easy.
Suasn D. –
Excellent tool for the price. The MTV 256 PRO accurately picked out a glowing hot bearing on our factory conveyor belt.
Seve K. –
Good thermal imager. The Marmonix MTV256 PRO boots up relatively fast, though navigating the color palettes took a few tries to master.
Rihcard D. –
The MP4 video recording on the Marmonix MTV256 PRO is a game changer for showing clients intermittent electrical issues.
Samael K. –
Five stars for the Marmonix MTV256 PRO! The blending of the visual and thermal images helps me orient myself in complex engine bays.
nick.f.electric –
Absolutely worth the money. The MTV-256 PRO paid for itself on the very first commercial electrical inspection I did.
Kevni K. –
It works okay, but the 25Hz refresh rate on the MTV-256 PRO lags slightly if you pan across a room too quickly.
Vicotr H. –
Excellent sensitivity! The MTV_256 PRO’s 70mK NETD easily detects the absolute slightest temperature variations on insulated steam pipes.
plumber_tom –
Unbeatable for plumbing inspections. The MTV_256 PRO found a hot water pipe leak behind my drywall in seconds.
Gergory H. –
Very capable device. The MTV-256 PRO has a great thermal sensor, but the physical buttons click a bit too loudly for my taste.
timothy.y.99 –
Good value. The MTV 256 PRO’s 192×256 resolution is a massive step up from my old 160×120 thermal camera.
Cral K. –
The best handheld thermal camera under a grand. The MTV-256 PRO is accurate, reliable, and tough enough for job site use.
Danile K. –
The MTV_256 PRO does exactly what I need for automotive diagnostics. Taking off one star because the menu buttons are a little stiff.
Aroan D. –
I love that the MTV_256 PRO stores over 20k images. I just back it up once a month and never worry about running out of space on site.
melissa_b_tech –
The MTV 256 PRO works fine, but mine arrived with a scratched screen protector and the shipping box was heavily dented. Disappointed in the handling.
jefff_h –
I highly recommend the Marmonix MTV256 PRO for commercial roof moisture inspections after sundown. The thermal contrast is excellent.
Chirs H. –
I use the iron red palette the most. The Marmonix MTV256 PRO makes underfloor heating leaks incredibly obvious through the tile.
Kelley K. –
Fantastic product! The MTV 256 PRO’s combination of features, battery life, and durability makes it an absolute must-have for electricians.
Bety D. –
The automatic highest and lowest temp tracking on the MTV-256 PRO saves me so much time trying to find the hottest spot on a circuit board.
Eirc D. –
The MTV 256 PRO is a solid buy. The 720P visual camera could be a little sharper, but the infrared sensor is top-notch.
henry_w_hvac –
The multiple measurement zones on the MTV 256 PRO make diagnosing three-phase power imbalances incredibly fast and accurate.
tony.l.hvac –
Very durable feel. I accidentally dropped the MTV_256 PRO from a short ladder and it survived without a single scratch.
DIY_Mom –
Very easy to use! I am not a professional, but the Marmonix MTV256 PRO helped me find exactly where my home was losing heat.
raymond.j.tech –
The language support is great. My bilingual team can switch the MTV-256 PRO menu to Spanish easily so everyone can use it.
zach.p.88 –
Arrived quickly and works flawlessly out of the box. The MTV_256 PRO’s 4-hour battery life is completely accurate.
Kaern H. –
Lightweight and easy to hold for hours. The MTV-256 PRO is only 310g, so my arm doesn’t get tired scanning large facilities.
wyane_u_88 –
It’s an okay thermal imager. The MTV_256 PRO gets the job done for basic home inspections, but I expected the visual camera to be a bit better.
Amnada H. –
We use the MTV 256 PRO for checking server room racks. It does the job well, just wish the included lanyard was a bit longer.
gary.v.99 –
The 192×256 resolution is solid for the price point. The Marmonix MTV256 PRO is a great entry-to-mid level professional tool.
sparky_dan –
Type-C charging is so convenient. The MTV-256 PRO holds a charge for my entire shift without dying on me.
GadgetGuy –
The 8GB internal memory on the MTV-256 PRO is huge. I never have to worry about deleting photos on the job.
peter_o_hvac –
I like the MTV-256 PRO for checking HVAC ducts. I deducted one star because the screen smudges easily, so keep a microfiber cloth handy.
sean.k.plumbing –
I use the MTV 256 PRO to check for radiant floor heating pipes before drilling into concrete. It is 100% accurate every single time.
mike.builder77 –
Great camera, but the screen glares a bit in direct sunlight. Otherwise, the Marmonix MTV256 PRO is very reliable.
HVAC_Pro –
As an HVAC tech, the MTV 256 PRO has saved me hours of troubleshooting. Great battery life too!
sarah.k99 –
Bought the Marmonix MTV256 PRO to find drafty windows in our old house. Worked like a charm and paid for itself in heating savings.
Joes D. –
The Marmonix MTV256 PRO works great. I primarily use it for automotive exhaust diagnostics and it hasn’t let me down yet.