Spark Pro vs FLIR ONE Pro, TOPDON and Thermal Master
Five plug-in thermal cameras that people weigh against Spark Pro, side by side: the thermal sensor, the frame rate, the sensitivity and which phones they work with. We sell Spark Pro, so take our view with that in mind — the tables show where the others do better.
Four of the five have the same 256×192 thermal sensor at 25 Hz as Spark Pro; FLIR ONE Pro has 160×120 at 8.7 Hz. If your iPhone has a Lightning port (iPhone 14 or older), Spark Pro won't fit — the TOPDON, Thermal Master and HIKMICRO cameras come with a Lightning cable or adapter, and they are more sensitive and reach higher temperatures.
At a glance
| Camera | Thermal sensor | Frame rate |
|---|---|---|
| Spark Pro | 256×192 | 25 Hz |
| FLIR ONE Pro | 160×120 | 8.7 Hz |
| TOPDON TC002C Duo | 256×192 | 25 Hz |
| Thermal Master P3 | 256×192 | 25 Hz |
| Thermal Master P3 Lite | 256×192 | 25 Hz |
| HIKMICRO Mini2 V2 | 256×192 | 25 Hz |
The thermal sensor is how many temperature readings make up the picture: 256×192 is about 49,000, 160×120 about 19,000. More readings let you stand back from a wall or a ceiling and still see one pipe or one gap in the insulation. The frame rate is how often the picture updates: at 25 Hz it moves smoothly as you sweep, at 8.7 Hz it lags a little behind the phone.
Which phones they work with
| Camera | USB-C iPhone | Lightning iPhone (14 and older) | Android (USB-C) |
|---|---|---|---|
| Spark Pro | ✓ iPhone 15 to 18 | ✕ Won't fit | ✓ Android 12 or newer |
| FLIR ONE Pro | ✓ USB-C version | ✓ Lightning version | ✓ Android version |
| TOPDON TC002C Duo | ✓ | ✓ with the Lightning cable in the box | ✓ |
| Thermal Master P3 | ✓ | ✓ with the adapter in the box | ✓ |
| Thermal Master P3 Lite | ✓ | ✓ with the adapter in the box | ✓ |
| HIKMICRO Mini2 V2 | ✓ | ✓ with the adapter in the box | ✓ |
If your iPhone has a Lightning port, Spark Pro is not for you. It plugs into USB-C only, and the maker doesn't include a Lightning adapter. Any of the other five will do; FLIR sells a separate version for each kind of phone, so buy the one for yours. Every phone against every tool: phone compatibility.
More specs
| Camera | Sensitivity | Top temperature | Weight |
|---|---|---|---|
| Spark Pro | 50 mK | 350 °C (662 °F) | about 21 g |
| FLIR ONE Pro | 70 mK | 400 °C (752 °F) | 36.5 g |
| TOPDON TC002C Duo | under 40 mK | 550 °C (1022 °F) | 30 g |
| Thermal Master P3 | under 35 mK | 600 °C (1112 °F) | about 26 g |
| Thermal Master P3 Lite | 40 mK or less | 600 °C (1112 °F) | 32.6 g |
| HIKMICRO Mini2 V2 | under 40 mK | 350–400 °C (retailers differ) | 20 g |
All of them start at −20 °C (−4 °F). A lower mK number separates smaller temperature differences; Spark Pro's 50 mK is behind the TOPDON, Thermal Master and HIKMICRO cameras and ahead of FLIR ONE Pro. Top temperature only matters for hot work — engines, exhausts, stoves, flues. For walls, windows, pipes and outlets every camera here has range to spare. FLIR ONE Pro is the only one with its own battery, about an hour per charge; the others run off the phone.
Who should pick which
- Lightning iPhone (iPhone 14 or older): the TOPDON TC002C Duo, the Thermal Master P3 or P3 Lite, or the HIKMICRO Mini2 V2 — each comes with a Lightning cable or adapter. Or FLIR ONE Pro in its Lightning version.
- Circuit boards and small electronics: the Thermal Master P3. It has a manual focus ring and focuses as close as about 8 mm.
- Engines, exhausts, kilns, anything above 350 °C: the Thermal Master P3 or P3 Lite (up to 600 °C) or the TOPDON TC002C Duo (up to 550 °C).
- Outlines from a normal camera on the thermal picture: FLIR ONE Pro. Its MSX draws the edges of window frames and outlets onto the thermal image; none of the others here do that. The trade-off is 160×120, 8.7 Hz and a battery to charge.
- Whole-house checks with a USB-C iPhone 15 to 18 or an Android phone: Spark Pro. It plugs straight into the phone with nothing to charge, and against FLIR ONE Pro it has more than twice the thermal readings (256×192 against 160×120) and a smoother 25 Hz picture.
Buying Spark Pro from us
Free tracked shipping from China, usually 7–15 days, 30-day returns, a 12-month limited warranty, and a full refund including return shipping if it doesn't work with a phone we list as compatible. The other cameras are sold by their makers and other stores, each with their own prices and terms.
FLIR, TOPDON, Thermal Master and HIKMICRO are trademarks of their owners; we're not affiliated. Specs are from each maker's product pages, or Amazon listings where the maker gives none, as of October 2026.
