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403255 Extech Temperature Probe

The 403255 is a temperature probe from Extech. Use an electrical probe to test equipment and measure currents and voltages. Temperature probes convert temperature into electrical signals to be read by a meter.

Additional Features:

  • °C/°F Switchable Pocket size InfraRed ThermoMeter with laser pointer measures temperature to 260°C/500°F
  • Range: 0-500°F or 0 to 260°C
  • Accuracy: ±3%
  • Resolution: 1°F
  • Emissivity: 0.95 fixed
  • Display: Backlit LCD,1999 counts
  • Power: four 1.5V AAA batteries
  • Field of view: 65mm diameter at 1000mm
  • Dimensions: 6.7x1.7x1.6" (170x44x40mm)
  • Weight: 6.4oz. (200g)
  • Super Large 3-1/2 Digit (1999 count) multi-function backlit LCD with Data Hold
  • Built-in laser pointer to improve aim
  • Auto-hold after releasing the Measure button
  • Fixed emissivity (0.95) covers 90% of surface applications
  • Narrow field of view (at 12" distance measure 1" target)
  • Auto Power Off
  • Built-in analog output of 1mV/°F or °C
  • Pocket size meter complete with carrying case and batteries.


  • Measure surface temperature of objects difficult to reach or unsafe to contact
  • Measure hot spots in electrical panels and equipment
  • In-process temperature measurements
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