Wall mount temperature (-10°C to +80°C) and Humidity sensor for use in IT environment. 2 RJ11 connectors on the device allows daisy-chaining of the sensors, RJ11 cable included.
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.