• Temperature & Humidity Loggers

Temperature & Humidity Loggers


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SP425 Temperature Data Logger
TP425 Temperature & Humidity Logger

A small temperature data logger with lots of cool features - Start/Stop functionality for the most precise data collection needs along with a digital display that provides current and min/max readings.

  • Digital Display
  • Start & Stop button
  • 32KB data storage
  • Battery powered


 SP425TP425
Ambient Operating RH Conditions0-95% RH non-condensing5-95% RH non-condensing 
Ambient Operating Temperature Conditions-4 to 158F (-20 to 70C)
Battery Life (Avg)1 Year
Cable DetailsUSB - Male Series A plug to 5 pin Male
Series B mini plug.
Cable Length6 ft.
Calibration OptionsN100, N300, N400, N520
ChannelsCH1: TemperatureCH1: Temperature, CH2: Humidity  
Data Capacity32,51232,000 (16,000 per Channel)
Delayed StartYes
Dimensions2.25 x 38 x 1.34in2.88 x 2.0 x 1.25in 
Display Resolution11 from 0.0 to 999 
Display TypeLCD
Display Update Rate20 Seconds
Download Time1 Minute
Download TypeUSB
Humidity Accuracy-+/-3.0% RH from 60.0 to 95.0%; +/-2.0% RH from 0.0 to 60.0%
Humidity Range-0-95% RH non-condensing
Humidity Sensor Type -Monolithic IC Humidity Sensor 
IP Rating20
Included Accessories123A Lithium Battery and Quick Start Guide. *Software is not included.
Minimum Software Version Required13.6
PC RequirementsMicrosoft Windows 98 or higher; 16 MB RAM, 1 free USB root hub, CD drive, VGA monitor or better
Power Source132A Lithium Battery (User Replaceable)
Sample IntervalUser Selectable (from 1 second to 24 hour intervals, in 1 second increments).
Software OptionsA016, A026
Temperature Accuracy+/-1.2ºF from -4 to 158ºF (+/-0.7ºC from -20 to 70ºC)+/-0.8F from 20.0 to 120.0F 1.8F Remaining (+/-0.44C from -6.0 to 48.0C 1.0C Remaining)
Temperature Range-4 to 158ºF (-20 to 70ºC)
Temperature Sensor TypeInternal Digital Temperature Sensor
Unit Weight1 lb
Units/Pkg1
Warranty12 Month Limited