4 models
Temperature & Data Loggers
Self-contained Thermochron / Hygrochron loggers for cold chain and validation.
DS1921G
DS1921G Thermochron Temperature Logger
The workhorse cold-chain logger: 2048 timestamped readings plus a built-in histogram, −40 to +85 °C.
DS1922L
DS1922L High-Resolution Temperature Logger
±0.5 °C accuracy and 0.0625 °C resolution, sampling as fast as once per second.
DS1923
DS1923 Hygrochron Temperature + Humidity Logger
The only iButton that logs relative humidity — 0–100 % RH alongside temperature, from one sealed can.
DS1925
DS1925 High-Capacity Long-Mission Logger
125,440 timestamped readings — 15× the DS1922L, enough for a year-long mission at one point per 5 min.
Not sure which model fits?
Tell us the panel, intercom or lock you need to work with — we will name the part and send a sample.