(Administrator Users only.)
You can set a 'calibration offset' for a Transmitter-Sensor. For example, if you know that a refrigerator temperature is 5° but the Transmitter-Sensor is showing 6°, you would need to set an offset of -1.
1.Select Settings>Transmitters to give the Transmitter Configuration page.
2.Click Edit against the Transmitter-Sensor you wish to calibrate.
3.Enter the required offset value in the Calibration Offset box of the Edit Transmitter page. (The value can be positive or negative, a whole number or a decimal.)
4.Click 
.