Series MTL20/30 Miniature USB Data Logger

Measure Temperature, Humidity, and Dew Point

The Series MTL Miniature USB Data Logger measures and records accurate readings for temperature or temperature/humidity/dew point in a wide range of applications. Sampling intervals and high/low alarm settings are user selectable through the included easy to use Windows® based software. On models ordered with an integral display, the temperature and humidity readings alternate on the display. The series MTL can be software configured to begin measuring based on a time delayed-start or by push-button. The logger can store up to 43,344 readings and can be set to stop on memory full or for continuous recording. Stored data is downloaded by plugging the unit into a PC's USB port (cable included). The loggers provide measurements for many environment conditions, which make them ideal for refrigeration systems, laboratories, and medical storage facilities.

Models & Ordering

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

COVID-19 Update: Due to high customer demand, lead time on some products may be up to two weeks. While this is a developing health situation, we are working continuously to take the necessary measures to ensure that the products you need are available with minimal interruption.

Model Description Usually Ships* Price Code Order
Ships: Consult Factory
Price: $94.00
Miniature USB data logger, temperature. Consult Factory* $94.00 N Order


Temperature Range:
MTL20: -40 to 185°F (-40 to 85°C); MTL30: -40 to 160°F (-40 to 70°C), 0% to 99% RH (non condensing).
MTL20: ±1°F (±0.5°C); MTL30: ±1°F (±0.5°C), ±2% RH from 10% to 90% RH.
Non-LCD models: 0.01°F (0.01°C), 0.01% RH; LCD models: 0.1°F (0.1°C), 0.1% RH.
Memory Size:
43,344 temperature; 21,672 each temperature and RH.
Sampling Mode:
Stop on memory full or memory rollover for continuous recording.
Sampling Rate:
1 sec. to 18 hrs.
Computer Requirements:
Windows®-based application software included.
Power Requirements:
3 V CR2032 lithium metal battery, installed functional, user replaceable.
Programmable high/low.
USB port (cable included).
1 oz (28 g).
Agency Approvals:

Product Literature


Catalog Pages



Photo Downloads

You must be logged in to view this content.
Click here to login to your account.

Product Reviews

Only registered users can write reviews. Please Sign in or create an account