The information about time related sensors precision and the need for calibration can be found in this application note https://hw-group.us/support/sensor-accuracy-over-time.
You can also get a sensor with a calibration protocol.
HTemp-1Wire Rack 19
Combined temperature (-10°C to +80°C) and humidity probe for IT environment (1-Wire bus). Fits into a 19" or 10" cabinet (1U size). 2 RJ11 connectors for daisy chaining the sensors, RJ11 cable included. Sensor can be placed to the front or to the back as a 1U device, or fixed to the wall. Designed for connection with Poseidon, Ares and STE2.
Features:
- Combined temperature (-10°C to +80°C) and humidity sensor
- 1U rack mount, 2x RJ11, daisy-chainable
- 3m connection cable included
- Temperature and humidity measuring in IT
Applications and usage:
- Monitoring of temperature and humidity in IT cabinets (racks)
- Monitoring of temperature and humidity in server rooms
