DS1921H Description
DS1921H/DS1921Z High-Resolution Thermochron iButton Devices SPECIAL.
DS1921H Key Features
- Digital thermometer measures temperature in 1/8°C increments with ±1°C accuracy
- Built-in real-time clock (RTC) and timer has
- Water resistant or waterproof if placed inside DS9107 iButton® capsule (Exceeds Water Resistant 3 ATM requirements)
- Automatically wakes up and measures temperature at user-programmable intervals from 1 to 255 minutes
- Logs consecutive temperature measurements in 2KB of datalog memory
- Records a long-term temperature histogram with 1/2°C resolution
- Programmable temperature-high and temperature-low alarm trip points
- Records up to 24 time stamps and durations when temperature leaves the range specified by the trip points
- 512 bytes of general-purpose battery-backed SRAM
- municates to host with a single digital signal at 15.4kbits or 125kbits per second using 1-Wire® protocol