Seek Nano 200 vs Nano 300

For wider indoor inspections on Android, our pick within this pair is the Seek Nano 300; choose the Nano 200 when you want a narrower scene. Their native detectors are 320 × 240 and 200 × 150, respectively, but both use fixed focus and the separate Seek Nano app. Buy the supported phone-and-camera combination first: the Android USB-C versions are CQ-ADAX and CW-DBAX, respectively. These recommendations follow Seek's specification sheet and Nano FAQ.

Quick picks: choose the scene and working distance

Compare specifications and all conditions

A wider view when you cannot step back

Our choice

Nano 300

Purchase condition

Its larger detector covers a wider scene; check the phone matrix below

A narrower view of a selected area

Our choice

Nano 200

Purchase condition

Its smaller field of view suits this framing; it shares the listed temperature accuracy

Close detail on small electrical components

Our choice

Either, with the optional macro lens

Purchase condition

Confirm the accessory's working distance and the target size before ordering

Saved files for later temperature analysis

Our choice

Confirm the workflow before choosing either

Purchase condition

Gallery sharing alone does not establish editable temperature data

Full comparison table ↔

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What you need	Our choice	Purchase condition
A wider view when you cannot step back	Nano 300	Its larger detector covers a wider scene; check the phone matrix below
A narrower view of a selected area	Nano 200	Its smaller field of view suits this framing; it shares the listed temperature accuracy
Close detail on small electrical components	Either, with the optional macro lens	Confirm the accessory's working distance and the target size before ordering
Saved files for later temperature analysis	Confirm the workflow before choosing either	Gallery sharing alone does not establish editable temperature data

What you need	Our choice	Purchase condition
A wider view when you cannot step back	Nano 300	Its larger detector covers a wider scene; check the phone matrix below
A narrower view of a selected area	Nano 200	Its smaller field of view suits this framing; it shares the listed temperature accuracy
Close detail on small electrical components	Either, with the optional macro lens	Confirm the accessory's working distance and the target size before ordering
Saved files for later temperature analysis	Confirm the workflow before choosing either	Gallery sharing alone does not establish editable temperature data

The first three choices follow the optics and accessory specifications below. The last is a buying requirement: obtain a saved-file demonstration if that is the reason for buying.

Nano 200 vs Nano 300: the hardware comparison

These are manufacturer specifications, drawn from the Nano product page, the linked specification sheet and FAQ. Detector dimensions describe the sensor, not an enlarged output image; Seek explicitly confirms that the Nano 300 figure is its true sensor resolution.

Best for wider indoor coverage: Seek Nano 300

Choose the Nano 300 Android USB-C, CQ-ADAX, when fitting more of the scene into the image is your priority. The wider view is the reason we favor it for indoor surveys where camera position is constrained. Its native detector is larger, while the listed focus, frame rate and temperature accuracy match the Nano 200.

The limitation is the relationship between resolution and coverage. More detector pixels across a wider view do not automatically mean a small distant component occupies more pixels. Choose this model for its framing advantage, then check the detail your actual target needs.

See the Nano 300 and official specifications at Seek.

Best for a narrower scene: Seek Nano 200

Choose the Nano 200 Android USB-C, CW-DBAX, when the narrower view matches the area you want to examine. It retains the same stated accuracy and phone-powered operation. Seek's app guide documents the shared center spot, high/low spots, palettes and capture workflow.

The trade-off is less scene coverage from the same camera position. It also does not gain adjustable focus by having a narrower view. For close components, plan around the macro accessory rather than assuming either bare Nano is a close-focusing inspection camera.

See the Nano 200 and official specifications at Seek.

Focus and target detail: why the bigger detector is not the whole answer

Seek's FAQ says both cameras are fixed focused to infinity, with digital pinch-to-zoom and no optical zoom. The cited documents do not specify a minimum working distance for the bare camera. Do not borrow a near-focus distance from a different thermal camera.

The specification sheet says the optional macro lens changes the focus point to within 2 in (50 mm). That is the documented route for close component observation. Confirm the usable spacing for your board or assembly before buying; a digital enlargement does not adjust the optics.

Reading the sheet's horizontal resolution and view-angle rows together, the larger pixel width is accompanied by a proportionately wider angle. Our inference is that much of the additional detector covers more scene, rather than providing a substantial magnification advantage at the same distance. We have no measured target-resolution results for either camera. Match the scene width, target size and working distance instead of buying on the detector dimensions alone.

Android compatibility: check the exact phone and app

Seek's Nano compatibility list, checked November 3, 2026, names the following approved Android phones. The support page itself is dated January 30, 2025; treat it as a specific list, not approval of every newer model or every phone in a series.

The published app minimum is Android 10 or newer. Seek's Android connection advice also requires OTG/USB OTG mode. Check these separately from the camera's connector. Seek describes tablets as outside the tested, intended use case, and warns that the Nano app is unavailable in some countries; check access before ordering.

1. 1

   Install the correct app

   Use Seek Nano, linked from Seek's product page; the older Seek Thermal app does not operate Nano.

2. 2

   Check the connection

   Enable USB OTG where required, use the Android camera version and check that its connector seats through your case.

3. 3

   Confirm the workflow

   Open a live image, capture a sample and check gallery sharing before relying on the kit for a job.

Saved images, temperature measurements and sharing

Seek's Nano app guide documents a center temperature spot, minimum/maximum spots and seven color palettes. Picture-in-picture uses the phone's daylight camera. The gallery opens captured photos and video recordings and provides sharing.

The FAQ says storage depends on the phone's capacity, limits individual video recordings to five minutes, and documents date/time stamps in the app gallery and phone gallery. It says the app requires no subscription. Seek also explains that an automatic shutter can click and briefly freeze the live image for a few frames during normal operation.

The documentation establishes capture and sharing, but does not establish selecting new temperature points after saving, changing saved-image measurement settings or exporting full per-pixel radiometric data. If your work depends on revisiting measurements, ask Seek for a saved sample and a demonstration of that exact analysis. Do not translate a promise of photo capture into a promise of temperature-data export.

• Yes: Documented: live center and high/low temperature spots
• Yes: Documented: gallery viewing and photo/video sharing
• Partly: Confirm before purchase: later temperature analysis on saved files
• No: Seek's SDK is not supported by Nano

Connector variants, case clearance and the complete order

The Android part numbers in the comparison table are distinct from these Apple versions in Seek's specification sheet:

Buy by the platform-specific part number, not just “USB-C.” Seek says the connector was designed to pass through protective cases, but its FAQ does not verify general USB-C extension cables: the only adapter it says it has verified is Apple's USB-C to Lightning adapter. Check clearance with your actual case instead of planning around an unconfirmed extension.

The macro lens is a separate accessory, identified as NM-AAA. Seek also describes a protective case that holds a Nano and macro lens. The linked camera documents do not enumerate standard box contents, so confirm the camera part number, included protection and macro lens separately. At this source check, Seek's Nano storefront category displayed the lens and case; confirm camera availability and the complete package directly with Seek.

Already own a Compact or CompactPRO?

Keep the older family separate. Seek's Compact FAQ describes the Seek Thermal app, including CompactPRO controls; its Compact compatibility page discusses Lightning, Android USB-C and micro-USB connections. Those phone lists and adapter instructions do not establish Nano support. The Nano FAQ explicitly excludes the former Compact app and Seek SDK.

How we choose

We compared Seek's product page, specification sheet, app guide and model-specific support pages, checked November 3, 2026. Recommendations follow documented optics, host support and capture functions. We retained the conflicting view angles and identified unconfirmed package and saved-file details; no independent performance readings are claimed. Our selection method explains the approach.

Verdict

Buy Nano 300 for wider framing, or Nano 200 for a narrower scene, after matching the Android phone and exact camera version. For close components, resolve macro-lens spacing first; for later temperature analysis, resolve the saved-file workflow first. For other camera formats, use our best thermal cameras guide. If considering FLIR instead, check its separate FLIR ONE compatibility guide.