Temperature logger holds 122 KB of Data-Log Memory


DS1925 has the highest capacity on the market‹other data loggers have only 16 KB of memory.

iButton devices are wear-tested for 10-year durability


Provides High-Quality Temperature Exposure Assessment of an End Product

  • Temperature Measurement Accuracy of ±0.5°C with Storage for Up to 125,440 Timestamped Values
  • Flexibility to Monitor and Data-Log Long Duration Exposures with Short-Duration Time Intervals
  • Unique Factory-Lasered 64-Bit Serial Number Ensures Absolute Traceability Because No Two Parts Are Alike

Highly Configurable Options for Data Logging and Security

  • Programmable Sample Rates from 5min to 273hrs
  • Programmable Recording Start Delay After Elapsed Time or Upon a Temperature Alarm Trip Point
  • Two-Level Password Protection of All Memory and Configuration Registers
  • Measure and Report Internal Battery Level and Output-Logged Data if a Battery is Depleted

Physically Robust, Operationally Efficient

  • Durable Stainless-Steel Enclosure Withstands Harsh Environments and Conditions
  • Communicates to a Host System with the Single-Contact 1-Wire Interface
  • -40°C to +85°C Operating Temperature Range

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