# TM300-NIST Extech Thermometer New

**Features**

-   Large backlit LCD displays T1, T2, T1-T2 differential, plus Min, Max, and Avg
-   Wide temperature range with 0.1°/1° resolution
-   Readout in °F, °C, or K (Kelvin)
-   Data Hold function freezes reading on display
-   Max/Min/Avg readings with relative time stamp
-   Offset key used for zero function to make relative measurements
-   Auto Power off with disable feature
-   Complete with two general purpose Type K bead wire temperature probes, three AAA batteries, and pouch case

**Accessories (Included)**

-   1 - NIST Certificate of Calibration
-   2 - General Purpose Type K Bead Wire Temperature Probes
-   3 - AAA Batteries
-   1 - Pouch Case

**Specifications**

-   Temperature (Type K): -328 to 2501°F (-200 to 1372°C)
-   Temperature (Type J): -346 to 2012°F (-210 to 1100°C)
-   Basic Accuracy: ±(0.15% rdg + 1.8°F/1°C)
-   Type (Contact Thermometers): Thermocouple
-   Types RTD/Thermocouples Accepted: J, K
-   Number of Probe Inputs/Channels: 2
-   Resolution (thermometers): 0.1°/1°
-   Accuracy: ±(0.15% rdg + 1.8°F/1°C)
-   Resolution: 0.1°/1°
-   Dimensions: 8.7 x 2.5 x 1.1" (220 x 63 x 28mm)
-   Weight: 7oz (200g)

The Extech TM300-NIST is a Type K/J Dual Input Thermometer measures Type K Temperature to 2501°F (1372°C) and Type J to 2012°F (1100°C). Its large backlit LCD displays T1, T2, T1-T2 differential, plus Min, Max, Avg. It features unique side-button controls for convenient one-hand operation. Functions include: readout in °F, °C, or K (Kelvin), Data Hold, Min/Max/Average with relative timestamp and an Offset key used for zero function to make relative measurements.

## Details

- **Price:** 282.99 USD
- **Vendor:** Extech
- **Type:** Therm Met
- **Tags:** Extech, Manufacturers, Meters & DAQ, product_manual_group_2, Product_new, Thermometer

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 282.99 USD | In stock |

## Images

- TM300-NIST Extech Thermometer New

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> Source: [ValueTronics](https://valuetronics.com/products/tm300-nist-extech-thermometer-new)
> Updated: 2026-05-21