In Signal-Level status display mode, the left two digits give an indication of the RF signal strength level above the background "noise" level - measured during the latest packet.

The right-most digit is the temperature code received from the Sensor. 0 indicates -40C. 1 = -20C; 2 = 0C; 3 = 20C; 4 = 40C; 5 = 60C; 6 = 80C & 7 = 100C (Sensor melting range).