| Specifications | 521302 | 597567 | 597568 |
| Accuracy | 0.1 °C ±1 digit between 0° to 50°C | 0.1 °C ±1 digit between 0° to 50°C | 0.1 °C ±1 digit between 0° to 50°C |
| Ambient Temperature | Auto-corrected to 0.1°C | Auto-corrected to 0.1°C | Auto-corrected to 0.1°C |
| Analog Output | Approximately 10 mV/°C | Approximately 10 mV/°C | Approximately 10 mV/°C |
| Compensation Metric | 0 to 50 °C | 0 to 50 °C | 0 to 50 °C |
| Display | LCD, 3-1/2 digits, 13 mm (1/2 in) high | LCD, 3-1/2 digits, 13 mm (1/2 in) high | LCD, 3-1/2 digits, 13 mm (1/2 in) high |
| Input Socket | Miniature ‘T’, quick disconnect, copper-constant | Miniature ‘T’, quick disconnect, copper-constant | Miniature ‘T’, quick disconnect, copper-constant |
| Power Supply | Battery | Battery | Battery |
| Power Supply Voltage | 9 V | 9 V | 9 V |
| Resolution Metric | 0.1 °C of reading ±1 digit | 0.1 °C of reading ±1 digit | 0.1 °C of reading ±1 digit |
| Sensor | Type ‘T’ Thermocouple, copper-constant | Type ‘T’ Thermocouple, copper-constant | Type ‘T’ Thermocouple, copper-constant |
| Temperature Range Metric | 100 to +200 °C | 100 to +200 °C | 100 to +200 °C |