Thermoworks THS-221-900 1P67-rated waterproof type K thermocouple thermometer is ideal for use in humid wet environments. Its extruded aluminium with protruding rubber seals is impact resistant and accuracy of ±0.28°C (0.5°F). Each unit is individually calibrated and comes with NIST-Traceable calibration report. A heavy duty penetration probe is supplied and meter is compatible for use with any Type k thermocouple probes