- High accuracy models (TW-USB-2+, TW-USB-2-LCD+)
- Temperature, humidity, and dew point
- Connect to DataPad or directly to PC via USB
- LED alarm indication
- No cables, dongles or docks
- Software included
- Push Button Start Option
- TW-USB-2+ and TW-USB-2-LCD+ approved for immunization labs
Our new USB Data Loggers are a cost-effective solution for logging temperature and humidity data just about anywhere. With built-in alarm LEDs you'll know before you download that there has been a danger condition. Set the logging interval and the start time from the PC software and it's that easy. There are no cables, cradles, or dongles to keep track of.
LCD Display Loggers
Keep visual track of your data with our new LCD data loggers for temperature and humidity. Their high contrast LCDs show Min, Max and current readings for both parameters. The display can be shut down during the log to extend battery life while allowing the user to periodically view the displayed readings.
High Accuracy Temperature and Humidity Loggers
The TW-USB-2+ and TW-USB-2-LCD+ loggers feature high accuracy for temperature, humidity and dewpoint. New! Record critical temperature and humidity data with precision to ±0.6°F (±0.3°C) and ±2% RH.
With an IP 67 rating, our TW-USB-2 & TW-USB-2+ loggers are water resistant and can log in the harshest environments. Store up to 16,382 readings at temperatures to 176°F.
|Input|| High-Accuracy Sensor— |
Temperature, Humidity, Dewpoint;
LCD Display (on LCD unit)
|Environmental Range||Temp: -31 to 176°F (-35 to 80°C) |
Humid: 0% to 100%
|Measurement Range||Temp: -31°F to 176°F (-35°C to 80°C) |
Humid: 0% to 100%
|Temperature Accuracy||±0.6°F (±0.3°C) Typical from|
±3.0°F (±1.5°C) Max;
|Humidity Accuracy||±2% RH Typical from 20-80% RH|
±4% RH Max
Dewpoint: ±2°F (±1.1°C), 40 to 100% RH @ 77°F (25°C)
|Humidity Response||Approx. 20 min _ ambient monitoring|
Up to 4 hours _ step changes*
|Sample Rate||User selectable 10s to 12h|
|Battery||3.6V 1/2AA / 3-6 months typical, 1 year max**|
|Resolution||Temp: 1°F (0.5°C), Humid: 0.5%|
|Alarms||Hi/Low programmable for both|
|Alarm Status||Red/Green LED|
|Memory||16,328 readings per channel|
|Logging Start||Delay or immediate, and push-button on LCD unit|
|Software||Windows 98, 2000, XP, Vista, 7, 10|
*Approx. 20 minutes to 90% of reading when tracking environmental changes. Up to 4 hours for step changes in humidity (for example if calibrating the product).
**Battery life is affected by sample rate, ambient temperature and use of alarm LED.
Visit our Help Center For more information and troubleshooting tips.
High accuracy models TW-USB-2+ and TW-USB-2-LCD+ with temperature accuracy to ±0.3°C, and humidity accuracy to ±2%RH.
Approved for immunization labs.
Plugs directly into USB port. No cables or adapter required. Software is included.
View data graphically or export to spreadsheet.
Plug any type K, J, or T thermocouple into the TW-USB-TC or TW-USB-TC-LCD logger.
Click here to order probes.
Rugged Metal Case
Fits TW-USB-1 or -2, watertight to IP67/NEMA-4X.
(NOTE: When using with the TW-USB-2 Temp/Humidity logger, measurements are limited to temperature only)