testo 862-1 & testo 862-2 - Pocket-Sized Thermal Imagers
Bring thermal imaging into everyday servicing with the testo 862-1 and testo 862-2 pocket-sized thermal imagers. Designed for HVAC/R, building inspections and industrial maintenance, these compact cameras help you locate temperature irregularities and decide where to investigate further.
Fusion mode adds visual context to thermal images, making areas of interest easier to recognise. Straightforward operation and built-in analysis tools help you move confidently through radiator checks, equipment inspections and building assessments.
Compare both models below, request a quote or contact our team for help choosing your thermal imager.
testo 862 Key Features:
- Clear thermal detail: choose 160 x 120 or 256 x 192 pixel infrared resolution
- Easier interpretation: Fusion mode adds visual context to temperature patterns
- Practical analysis: hot and cold spot detection, alarms and automatic Delta T calculations
- Application-specific tools: DeltaHeat for radiator performance checks and humidity mode for mould risk assessment
- Robust construction: IP54 protection and 1.5 m drop resistance support everyday field use
Specifications:
| Specification | testo 862-1 | testo 862-2 |
| Product code | 0560 8621 | 0560 8622 |
| Infrared resolution | 160 x 120 pixels | 256 x 192 pixels |
| Field of view | 40° x 30° | 56° x 42° |
| Maximum digital zoom | 4x | 6x |
| Temperature measuring range | -10 to +550°C |
| Thermal sensitivity (NETD) | < 50 mK at +25°C |
| Image refresh rate | 25 Hz |
| Power and battery life | Integrated rechargeable lithium-ion battery; 3 hours at +25°C |
Why choose the testo 862?
Both models combine practical inspection functions with a lightweight 215 g design. Choose the testo 862-1 for 160 x 120 pixel thermal imaging, or the testo 862-2 for higher 256 x 192 pixel resolution, a wider field of view and greater digital zoom.
Fixed-focus operation keeps spot checks straightforward, while USB-C charging makes recharging convenient between jobs. Free testo IRSoft PC software is also available for both models.
▶ testo 862 Features and Demonstration:
Applications — both models
- HVAC/R servicing: Thermal checks on heating, air conditioning and refrigeration systems
- Radiator checks: Assess radiator performance using DeltaHeat
- Building inspections: Locate temperature irregularities and support mould risk assessment using humidity mode
- Electrical and industrial maintenance: Identify hot spots that need closer investigation
- Facility management: Routine thermal inspections across buildings and equipment
Which model should you choose?
- testo 862-1: 160 x 120 pixel resolution — a practical choice for routine inspections and quick spot checks
- testo 862-2: 256 x 192 pixel resolution and a wider field of view — preferable when you need greater image detail or wider coverage of building surfaces and equipment
What Comes with the testo 862?
Each standard model is supplied with:
- testo 862-1 or testo 862-2 Thermal Imager (select resolution from dropdown)
- Soft Case
- Lanyard
- USB-C cable
- testo Smart App (Availability expected in 2027 via free update)
- IRSoft (free of charge)
❓ Frequently Asked Questions (FAQ)
Q1: Do these thermal imagers require manual focusing?
A. No. Both models use fixed focus, with a minimum infrared focusing distance of 0.25 m.
Q2: Can I add humidity or electrical readings?
A. Yes. Both models can receive readings via Bluetooth from the optional testo 605i thermohygrometer or testo 770-3 clamp meter. These instruments are sold separately.
Q3: Are both models compatible with the testo Smart App?
A. Testo lists Smart App compatibility as expected in 2027 via a free update.