The Klein Tools TI223 is a compact phone-attached thermal imager compatible with both Android and iOS devices, delivering 19,200-pixel thermal resolution without requiring batteries. The VOx microbolometer sensor covers a temperature range of -4° to 752°F with ±2°C accuracy and a thermal sensitivity under 50 mK. Three color palettes (ironbow, rainbow, grayscale), adjustable emissivity, and time-lapse video are supported via the Klein Tools app. The aluminum housing is lightweight at 0.9 oz. Ideal for electricians and HVAC technicians troubleshooting hot and cold spots. Backed by a 1-year limited warranty.
How does the TI223 connect to a phone?
The TI223 plugs directly into your phone's USB-C or Lightning port and draws power from the phone — no separate battery is needed. It is compatible with both iOS and Android, which is the key upgrade over the discontinued TI220 (Android-only) and TI222 (iOS-only).
What thermal resolution does the TI223 provide?
19,200 pixels (160x120 array) — the same thermal resolution as the standalone TI250. At this resolution, hot spots in electrical panels, moisture patterns in walls, and heat distribution across HVAC equipment are visible at a practical level for field diagnostics.
When does a phone-attached thermal imager make sense vs. a standalone unit?
The TI223 leverages your phone's large display, processing power, and app ecosystem (visible light overlay, GPS tagging, report generation). The TI250 standalone unit offers consistent operation independent of phone battery level and attachment mechanics. Frequent users often prefer standalone; occasional users find the phone-attached format convenient.
What temperature range does the TI223 measure?
-4 to 752 degrees F (-20 to 400 degrees C) — the same range as the TI250 and TI290, covering most electrical, HVAC, and building envelope applications.
Does the TI223 work with the Klein Tools app?
The TI223 uses the Klein Tools thermal imaging app (available for iOS and Android) for image display, capture, and analysis. The app enables thermal palette selection, temperature spot readings, and image export for reporting.
# Klein Tools® TI223 Mobile Thermal Imager For Android®/iOS® **Model:** `TI223` **Brand:** Klein Tools **Category:** Thermal Imager > The Klein Tools TI223 is a compact phone-attached thermal imager compatible with both Android and iOS devices, delivering 19,200-pixel thermal resolution without requiring batteries. The VOx microbolometer sensor covers a temperature range of -4° to 752°F with ±2°C accuracy and a thermal sensitivity under 50 mK. Three color palettes (ironbow, rainbow, grayscale), adjustable emissivity, and time-lapse video are supported via the Klein Tools app. The aluminum housing is lightweight at 0.9 oz. Ideal for electricians and HVAC technicians troubleshooting hot and cold spots. Backed by a 1-year limited warranty. ## Specifications | Attribute | Value | |---|---| | Product Type | Mobile Thermal Imager | | Resolution Pixels | 19,200 | | Resolution Display | 19,200 pixels | | Temperature Range | -4° to 752°F (-20° to 400°C) | | Temperature Accuracy | ±2°C or 2% | | Wifi | No | | Compatible Devices | iOS, Android | | Standalone | No | | Frame Rate Hz | 9 | | Rechargeable | No | | Overall Length In | 1.77 | | Assembled Weight Oz | 0.9 | | Barcode (UPC) | 092644694813 | | Warranty | 1-year limited | ## What's Included - Thermal Imager - Hard Storage Case with Carabiner - Instructions Source: https://www.jaspecs.com/klein-tools/thermal-imager/ti223-klein-tools-mobile-thermal-imager-android-ios/