Siretta Carbon LCD-21

USB temperature data logger with LCD screen

Linkedin Twitter Google+

Key Features
  • Lowest cost reliable USB temp logger with LCD disp
  • LCD Display allows viewing of live data
  • Measures temperature at user defined intervals
  • Software included
  • Easy download to a PC using USB port
  • Can record up to 32000 values
  • Celcius and Fahrenheit
  • long battery life - Included
  • IP66 rating
Buy Online
Part Number Weight Pack Qty Code Price (Ex VAT) Stock
Carbon-LCD-21 USB Temperature data logger Carbon-LCD 21
50g 1 34409 1+ £29.92 Yes (23)

Place your order before 2pm to select next day delivery. In a hurry? pre 10:30am delivery also available.


The Carbon-21 LCD low cost USB temperature data logger is the great value version of the Carbon series USB temperature loggers. This product is also available without an LCD display as the Carbon-21. The LCD shows live the temperature being sensed by the Carbon-21 LCD.

The Carbon series is a highly reliable USB temperature data logger series measuring and recording temperature / humidity values at user set intervals and storing them.

The Carbon series is popularly used for many things - typically: warehouses, galleries, greenhouses, cold rooms and specially useful in recording of temperature and humidity during transportation. The Carbon-21 LCD is the LCD version of the low cost Carbon-21. In all other respects is as reliable and competent performer as the top end Carbon temp loggers.

Supplied with a long-life replaceable lithium battery, this unit records data continually for at 6 months + (depending on logging rate and temperature). Recorded data can be downloaded in the form of spread-sheet by connecting the Carbon-21 LCD to a PC using the USB socket and using the supplied software.

The user can easily set up the logging rate and start time by connecting the Carbon-21 LCD to a PC. The Carbon-21 LCD is then disconnected from the PC and placed in the area where temperature measurement is required. To download the recorded temperatures, the user connects the Carbon-21 LCD to their PC.

This is done very simply by using the supplied software that runs under all Windows environments. Temperature data can then be graphically presented, printed and exported to other applications.

LCD display will show the current value and flash when the temperature has gone outside the user's set limits

Status indication is via flashing red and green LEDs. The logger is protected against ingress from water and dust to IP66 standard.

Additionally the Carbon-LCD 21 can log and store an incredible 32000 logs, more than 2 times the most well known USB data-loggers.

The Carbon-LCD 21 is a good value, high accuracy USB data-logger and is very easy to use.

The user can set maximum and minimum values, outside of which the LED light will issue a warning. The data logger is protected against moisture to IP66 standard.

Selectable parameters include logging rate, measurement units, high & low alarms and start-time.



  • Temperature range: -35 to +80°C
  • Temperature accuracy: ±0.3°C (±0.9°F)
  • Temperature resolution: 0.1°C
  • Logging rate: 10s to 12h
  • Number of logs: 32,000
  • Unit dimensions: 123mm x 37mm x 23mm
  • Unit weight: 90g
  • Power: 1/2AA, 3.6V 1200mAh Lithium battery - Included
  • Battery life: up to 2 years with 10 minute sample rate
  • IP rating: IP66
Related Products