These triple-display thermometers offer a choice of different probes. The bottle insulates the thermometer from rapid temperature changes when door is opened. The stainless steel handle probe (Ø×L: 3,2×300 mm) with 3 metre cable is waterproof and suitable for liquids, air/gas and semi-solids, with adjustable holder and VELCRO® tape.

• Maximum/minimum values on the last 24 hours (each hour) and the last 7 or 30 days (each day)
• Time and date stamp key: Time and date for all minimum and maximum readings
• Visual LED flashes and audible alarm sounds continuously even if temperature returns to non alarm range in 0,1 °C increments

Choice of four platinum probes with PTFE cable.

Calibration points:
620-1976 and 620-1977: −40 °C; 0 °C and 50 °C
620-1978: −80 °C; 0 °C; 50 °C and 190 °C
620-1979: −80 °C; −40 °C and 0 °C