| 561 | 566 | 568 | 568 EX | 572-2 |
| Recommended uses | Plant/general maintenance, HVAC | Electrical, mechanical, plant, diesel, HVAC in indus- trial environments | Electrical, mechanical, plant, diesel, HVAC in industrial environments, temporary process and equipment monitoring | Hazardous locations for maintanenace | Predictive maintenance, electrical, quality assurance, process monitoring |
| Infrared/noncontact | | | | | |
| Temperature range | -40 °C to 550 °C
(-40 °F to 1022 °F) | -40 °C to 650 °C
(-40 °F to 1200 °F) | -40 °C to 800 °C
(-40 °F to 1470 °F) | -32 °C to 760 °C
(-25 °F to 1400 °F) | -30 °C to 900 °C
(-22 °F to 1652 °F) |
| Accuracy | greater of ± 1 % or ± 1 °C (2 °F) | | | greater of ± 1 % or ± 1 °C (2 °F) | ±1 °C or ±1 % of reading
(whichever is greater) |
| Distance to Spot (D:S) | 12:01 | 30:1 | 50:1 | 50:1 | 60:1 |
| Sighting | Laser point | Laser point | Laser point | Laser point | Offset dual laser |
| Typical distance to target | 2.5 m (7 ft) | Up to 4.5 m (15 ft) | Up to 7.5 m (25 ft) | Up to 7.5 m (25 ft) | Up to 10.5 m (35 ft) |
| Close-focus
(6 mm/0.24 in spot) | — | — | — | — | — |
| Contact | | | | | |
| Probe type | Thermocouple K | Thermocouple K | Thermocouple K | RTD | Thermocouple K |
| Number of inputs | 1 | 1 | 1 | 1 | 1 |
| Temperature range | to 550 °C to 1022 °F) | -270 °C to 1372 °C (-454 °F to 2501 °F)
| -270 °C to 1372 °C (-454 °F to 2501 °F) | -40 °C to 260 °C
(-40 °F to 500 °F) | -270 °C to 1372 °C
(-454 °F to 2501 °F) |
| Data storage and download | | | | | |
| Number of on-board memory locations | — | 20 | 99 | 12 | 99 |
| PC download and software | — | — | Yes,
with FlukeView Forms | — | Yes,
with FlukeView Forms |
| Photographic data capture | — | — | — | — | — |
| Special features | | | | | |
| Time stamp | — | Time of day | Time of day | — | 12/24 hour clock |
| Soft-key feature menu navigaton | — | | | — | |
| MIN/MAX/AVG/DIFF | MIN/MAX/DIF | MIN/MAX/AVG/DIF | MIN/MAX/AVG/DIF | MIN/MAX/AVG/DIF | MIN/MAX/AVG/DIF |
| English, French, Chinese, Spanish, Portuguese, German user interface | — | | | — | |
| Material type adjustment (emissivity) | HI/MED/LO | Material table or 0.1 to 1.00 by 0.01 | Material table or 0.1 to 1.00 by 0.01 | 0.1 to 1.00 by 0.01 | 0.1 to 1.00 by 0.01 |
| Two levels of backlight | — | | | — | |
| High and low alarms | — | High and low alarms | High and low alarms | High and low alarms | High and low alarms |
| Hazardous location approval | — | — | — | FM approved intrinsically safe | — |
| Hands-free logging | — | — | | — | |
| Bar graph display of last ten measurements | — | — | — | — | |
| Battery | 2 AA | 2 AA | 2 AA | 9 V | 2 AA |
| Included case | Hard case
(except 561/R and 561/P) | Hard case | Hard case | Hard case | Hard case |
| Warranty | 2 Years | 2 Years | 2 Years | 2 years | 2 years |