Product Description

iButton Datalogger DS1922E : 15 to 140 C


The DS1922E temperature logger iButton is a rugged, self-sufficient system that measures temperature and records the result in a protected memory section. The recording is done at a user-defined rate. A total of 8192 8-bit readings or 4096 16-bit readings, taken at equidistant intervals ranging from 1s to 273hr, can be stored. Additionally, 576 bytes of SRAM store application-specific information. A mission to collect data can be programmed to begin immediately, after a user-defined delay, or after a temperature alarm. Access to the memory and control functions can be password protected. The DS1922E is configured and communicates with a host-computing device through the serial 1-Wire® protocol, which requires only a single data lead and a ground return. Every DS1922E is factory lasered with a guaranteed unique 64-bit registration number that allows for absolute traceability. The durable stainless-steel package is highly resistant to environmental hazards such as dirt, moisture, and shock.


iButton Size
F5 – 5mm
Operating Temperature
+15°C to +140°C
Temperature Accuracy
± 1.5°C: +110°C to +140°C (±7°C typical: +15°C to +110°C)
Temperature Resolution
Programmable: 0.0625°C to 0.5°C
Storage Temperature
+15°C to +140°C Storage or operation above +50°C significantly reduces battery life. (Note 21 on DS1922E Spec Sheet)
Log Memory Size
8K Bits
Memory Type
Logging Rate
Programmable: 1 sec to 273 hrs
General Purpose Memory
512 Bytes Read/Write
Logging Capacity
4096 – 8192 Readings, Depending on Resolution
Alarm Support
High/Low Temperature Alarms
Shelf life with battery installed
10+ years
Family Code
Unique ID
Yes – Factory Set 64 Bit Serial #
Country U.S.A.