Extech 392050 Penetration Stem Thermometer features: Measures temperature in air, liquids and semi-solids; 5" (130mm) stainless steel probe with 2" (54mm) dial; ON/OFF switch saves battery life; Auto power off after 1 hour; Temperature: -58 to 302°F (-50 to 150°C), ±2°F/1°C accuracy, 0.1°/1° resolution.
Extech 392052 Stem Dial Flat Surface Thermometer features: Measures temperature on surfaces such as grills and motors; 5" (130mm) stainless steel probe with 2" (54mm) dial; ON/OFF switch saves battery life; Auto Power off after 1 hour; Temperature: -58 to 572°F (-50 to 300°C), ±2°F/1°C accuracy, 0.1°/1° resolution.
Extech 392085 Pocket Thermometer Alarm features: Audible High/Low Alarms; Audible alarm alerts user when pre-set max or min temperature is reached or exceeded; Data Hold; Durable 2.5" (64mm) stainless steel probe with 20" (508mm) cable; Temperature: -58 to 302°F (-50 to 150°C), ±1.8°F/1°C accuracy, 0.1°/1° resolution.
Extech 39240 Waterproof Thermometer features: Pocket size with Max/Min recording; 2.75" (70mm) Stainless steel stem; Data Hold and Auto power off; Temperature: -40 to 392°F
(-40 to 200°C), ±2°F/1°C accuracy, 0.1°/1° resolution.
Extech 39272 Pocket Thermometer with Fold probe features: 4.5" (114mm) stainless steel probe adjusts from 0 to 180° for storage or measurement; Detents at 45°, 90°, 135°, and 180°; Fast response; Auto Power off after 1hour; Data Hold and Min/Max; Temperature: -58 to 572°F (-50 to 300°C), ±1.8°F/1°C, 0.1°/1° resolution.
Extech 401012 Indoor-Outdoor Temperature Alarm features: Audible alarm alerts user when Temperature exceeds the setpoints; Displays indoor/outdoor temperature simultaneously; Single or Dual Point audible Alarm (external sensor); Indoor/Outdoor: -58.0 to 158.0°F, ±1.8°F accuracy, 0.1°F resolution.
Extech 401014 Thermometer Big Digit Indoor-Outdoor features: Built-in memory stores Minimum and Maximum Temperature readings; Large LCD displays 1" (25mm) digits for indoor/outdoor temperature; Indoor Range: 14 to 140°F (-10 to 60°C) - Outdoor Range: -58 to 158°F (-50 to 70°C) ±1.8°F /1°C accuracy; 0.1°F/°C resolution.
Robinair 14766 Superheat Thermometer is a special HVAC Digital Superheat Thermometer. When used with Robinair’s Model No. 14599 or 14650 Access Valve Core Remover/Installer, this Thermometer provides temperature readings for superheat and sub-cooling calculations.
Testers and Tools 
