Does it work with both Android and iPhone?

Yes. It is made for Android and iOS phones and uses the phone's screen as the display, so picture quality depends on your phone.

Do I need to charge or replace batteries?

No. It draws power from the connected phone, so there are no batteries in the imager itself.

What temperature range can it measure?

From -4° to 752°F (-20° to 400°C), with accuracy of ±2°C or 2%, whichever is greater. Readings below -10°C are not calibrated.

Can it save images and video?

Yes. It captures JPG photos and time-lapse video, stored on the phone rather than in the imager.

Is it a replacement for a standalone thermal camera?

For quick troubleshooting, yes. It lacks a built-in screen and laser sighting, and its under-9 Hz frame rate and 19,200-pixel sensor are below what dedicated inspection cameras offer.

What comes in the box?

The thermal imager, a hard storage case with carabiner, and instructions.

Where can I buy the Klein Tools Mobile Thermal Imager For Android / iOS?

14 stores we checked sell it, including Walmart, Amazon, SupplyHouse.com, Test Equipment Depot, Acme Tools.

Klein Tools Mobile Thermal Imager For Android / iOS

Q: Where is the Klein Tools Mobile Thermal Imager For Android / iOS cheapest?

At Walmart, for $299.99, as of our latest check.

Best price now

$299.99at WalmartChecked 1 h ago

Compared across 14 stores. Prices are checked against each store and labelled with when.

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Klein Tools Mobile Thermal Imager For Android / iOS

Best price now

$299.99at WalmartChecked 1 h ago

Compared across 14 stores. Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Lowest price today: $299.99 at Walmart (checked Nov 12, 2026).
Checked at 14 stores.

Our take on the Klein Tools Mobile Thermal Imager For Android / iOS

The Klein Tools TI223 is a pocket-size thermal camera that plugs into an Android or iOS phone and turns it into a heat-spot finder. It uses a 19,200-pixel VOx microbolometer with under 50 mK sensitivity and reads from -4° to 752°F, with three color palettes, adjustable emissivity, high/low temperature markers, temperature alarms and time-lapse video. It draws power from the phone, so there are no batteries to charge, and it ships with a hard case and carabiner. It suits electricians, HVAC techs and homeowners chasing hot breakers, overloaded circuits, air leaks or missing insulation; it is a diagnostic tool, not a calibrated lab instrument, and it has no laser pointer or onboard display, so the phone screen is the viewfinder.

Best forElectricians checking panels and breakersHVAC and appliance troubleshootingHomeowners hunting drafts and insulation gapsAnyone who wants thermal imaging without a standalone camera

Pros

No batteries: powered by the phone
Small and light enough for a pocket or tool bag
Wide -4° to 752°F range covers electrical and HVAC work
Adjustable emissivity and three palettes for different surfaces
Hard storage case with carabiner included

Cons

No onboard display or laser sighting; you rely on the phone
Accuracy is ±2°C or 2%, and it is not calibrated below -10°C
Frame rate under 9 Hz, so moving targets smear
Image resolution is modest at 19,200 pixels

Klein Tools Mobile Thermal Imager For Android / iOS prices at every store

SupplyHouse.comNew
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Test Equipment DepotNew
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$380.15Free shippingChecked 1 h ago
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Klein Tools Mobile Thermal Imager For Android / iOS price history

Lowest price we've seen: $299.99 on Nov 12 at SupplyHouse.com. Tracked across 14 stores since Nov 12.

About the Klein Tools Mobile Thermal Imager For Android / iOS

The Klein Tools Mobile Thermal Imager plugs into an Android or iOS phone to show hot and cold spots for quick troubleshooting. The phone serves as the display, so the image resolution depends on the phone. The imager needs no batteries.

It has a VOx microbolometer sensor with 19,200 pixels and a temperature range of -4° to 752°F (-20° to 400°C). The housing is aluminum. The app shows high and low temperature points and touch-point temperature, and it offers temperature alarms and time-lapse video. Images can be viewed in three color palettes: Ironbow, Rainbow and Grayscale.

Part number: TI223
Product type: Thermal imager
Compatibility: Android and iOS phones
Material: Aluminum housing, electronic components
Length: 1.77 in (4.5 cm)
Width: 0.62 in (1.6 cm)
Height: 1.23 in (3.1 cm)
Weight: 0.07 lb (0.03 kg)
Power: No batteries needed
Display: External device; resolution depends on the phone
Picture-in-picture: No
Sensor type: VOx microbolometer
Sensor resolution: 19,200 pixels
Thermal sensitivity: <50 mK at 25°C
Spectral range: 8 to 14 μm
Temperature range: -4° to 752°F (-20° to 400°C)
Accuracy: ±2°C or 2%, whichever is greater; not calibrated below -10°C (14°F)
Field of view: 56° horizontal, 71° diagonal
Laser sighting: No
Emissivity: 0.01 to 0.99, adjustable
Color palettes: Ironbow, Rainbow, Grayscale
Frame rate: <9 Hz maximum
Photo capture: Yes
File format: JPG
Memory: External device
Features: High and low temperature points, touch-point temperature, temperature alarms, time-lapse video
In the box: Thermal imager, hard storage case with carabiner, instructions

Specifications

color: BlackSource

Questions and answers

Does it work with both Android and iPhone?: Yes. It is made for Android and iOS phones and uses the phone's screen as the display, so picture quality depends on your phone.
Do I need to charge or replace batteries?: No. It draws power from the connected phone, so there are no batteries in the imager itself.
What temperature range can it measure?: From -4° to 752°F (-20° to 400°C), with accuracy of ±2°C or 2%, whichever is greater. Readings below -10°C are not calibrated.
Can it save images and video?: Yes. It captures JPG photos and time-lapse video, stored on the phone rather than in the imager.
Is it a replacement for a standalone thermal camera?: For quick troubleshooting, yes. It lacks a built-in screen and laser sighting, and its under-9 Hz frame rate and 19,200-pixel sensor are below what dedicated inspection cameras offer.
What comes in the box?: The thermal imager, a hard storage case with carabiner, and instructions.
Where is the Klein Tools Mobile Thermal Imager For Android / iOS cheapest?: At Walmart, for $299.99, as of our latest check.
Where can I buy the Klein Tools Mobile Thermal Imager For Android / iOS?: 14 stores we checked sell it, including Walmart, Amazon, SupplyHouse.com, Test Equipment Depot, Acme Tools.

Stores we've priced the Klein Tools Mobile Thermal Imager For Android / iOS at

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