Proud Distributors of GUNT Hamburg, UTEST, FOUR E’s Scientific & LABTECH ITALY

USB Temperature & Humidity Data logger plus Ext Temp (LES-SSN-22ET)

USB Temperature & Humidity Data logger plus Ext Temp (LES-SSN-22ET)

SKU LES-SSN-22ET Categories ,
  • Temperature and Humidity with internal sensors
  • Temperature with external probe 80 x 4mm on 2m cable
  • Temperature Range (internal): -35 ~ 80°C with ±0.3°C accuracy
  • Temperature Range (external): -40 ~ 125°C with ±0.5°C accuracy
  • Humidity Range: 0 ~ 100% with ±3% accuracy
  • Dew Point calculated and graphed in software
  • LCD real-time display with battery and logger status
  • Green and Red LED’s for Log, alarm & battery status
  • Start on button press, time delayed or immediate
  • Offset calibration facility via software
  • 32,000 record memory (96,000 readings)
  • Size: 120 x 37 x 23mm
  • 6V ½ AA Lithium battery (approx. 3 years @ 1min)
  • Includes temperature probe, DGraph software and battery


  • This data logger is used mainly to monitor and verify humidity and temperature -sensitive goods, equipment or areas.
  • Examples:
  • Cold chain
  • Warehouse
  • Refrigeration
  • HVAC
  • Transportations
  • Food & Pharmaceutical




Internal Relative Humidity Measurement range  
Accuracy (Typ.)  
Resolution (Typ.)  
Internal Temperature Measurement range  
Accuracy (Typ.)  
External Temperature Measurement range  
Accuracy (Typ.)  
Resolution (Typ.)  
Memory capacity 64Kbytes (Total 31,998 Readings for all channels
Sample rate User selectable from once every 2 seconds to once every 12 hours
PC Software Dgraph software and USB driver required (Incl. in CD)
Power supply User replaceable 1/2AA, 3.6V lithium battery 1200mAh
Battery Life Approx. 3 years @ 1-minute sample rate
Dimensions 120mm x 37mm x 23mm (4.8″x1.5″x0.9″)
Case Material and weight ABS. Approx. 67 grams (2.36 Oz.)


  • Screws
  • Mounting Bracket

Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.