1110HI 93531R HI 93532RKeyboard Functions:ON/OFF : turn the meter ON and OFFT1/T2 (HI 93532R only) : select reading channel (T1, T2 or T1-T2)HOLD : freeze the reading on displayCLR : clear the HI and LO valuesDISP : select Normal, Relative or Average mode.ALT : enable the second function keys; the "ALT" tag turns on toindicate that the second functions are enabledNote: The ALT key can be released before pressing the secondfunction key for 1-hand operation.ALT/u CAL : press and hold for about 5 seconds to enter theCalibration mode (with reading within ±3°C range).(ALT +) AOFF : set auto power off delay (8 or 60 min, or disabled).(ALT +) °C/°F : change reading units (°C or °F).(ALT +) MR : recall memorized value.(ALT +) BL : toggle the backlight ON and OFF.SPECIFICATIONS OFHI 93531R & HI 93532RMain features:• Two independent measurement channels (HI 93532R only)• Use HI 766 K-thermocouple probes• Display of temperature in degrees Celsius or Fahrenheit• Extended range -200 to 1371°C or -328 to 2500°F• Relative and average measurements• HOLD function• HI & LO (Max & Min) temperature values displayed on the LCD• Remaining battery life indication / low battery detection• Waterproof casing• Auto-off capability• Backlight feature• User calibration at 0°C• RS232 serial port communicationSPECIFICATIONSRange (*) -200.0 to 999.9°C / 1000 to 1371°C-328.0 to 999.9°F / 1000 to 2500°FResolution 0.1°C (-149.9 to 999.9°C)0.2°C (-200.0 to -150.0°C) / 1°C (outside)0.1°F (-24.9 to 999.9°F)0.2°F (-249.9 to -25.0°F)0.3°F (-328.0 to -250.0°F) / 1°F (outside)Accuracy ±0.5°C (-100.0 to 999.9°C) / ±1°C (outside)(@20°C/68°F) ±1°F (-148.0 to 999.9°F) / ±1.5°F (outside)excluding probe errorTypical EMC ±3°C / ±6°FDeviation with HI 766 K-thermocouple probeBattery 3x1.5V AA (IEC LR6) batteries,approx. 500 hours of continuous use (BL off)Auto-off user selectable: 8 min, 60 min or disabledSerial Port unidirectional, 8-bit data, 1200 baudCommunication (see "Serial Communication" section)Environment -10 to 60°C (14 to 140°F); RH 100%Dimensions 150 x 80 x 36 mm (5.9 x 3.1 x 1.4")Weight 235 g (8.3 oz.)(*) Range may be limited by probe.