Thermochron iButton DS1921G Data Logger

Thermochron iButton DS1921G Data Logger for measuring how long the temperature stayed outside the permitted range and whether it was too hot or too cold. An additional 512 bytes of battery-backed SRAM allows storing data on the item with which the DS1921G is associated. The 1-Wire protocol transfers data serially and requires only a single data lead and a ground return. Every DS1921G is factory lasered with a 64-bit registration number that is guaranteed unique and electrically readable, allowing for absolute traceability.

Features of iButton temperature  Data logger:
• High Accuracy, Full-Featured Digital Temperature Logger Simplifies Temperature Data Collection and Dissemination of Electronic Temperature Record
• Accuracy ±1°C from -30°C to +70°C (See the Electrical Characteristics for Accuracy Specification)
• Digital Thermometer Measures Temperature in 0.5°C Increments
• Built-In Real-Time Clock (RTC) and Timer has Accuracy of ±2 Minutes per Month from 0°C to +45°C
• Automatically Wakes Up and Measures Temperature at User-Programmable Intervals from 1 Minute to 255 Minutes
• Logs Consecutive Temperature Measurements in 2kB of Datalog Memory
• Records a Long-Term Temperature Histogram with 2.0°C Resolution
• Programmable Temperature High and Temperature Low Alarm Trip Points
• Records Up to 24 Timestamps and Durations When Temperature Leaves the Range Specified by the Trip Points
• Individually Calibrated in a NIST-Traceable Chamber
• Complies to Standard EN12830
• 512 Bytes of General-Purpose Battery-Backed SRAM