As Scott posted, "I just posted a new development build of the firmware that includes a new command, EXTTEMP, that lets you add an external DS18S20 temperature sensor.
It's reported the same as the built-in temperature sensor (in C or F in the status text), and if you've got both enabled it'll send the internal temperature and then the external temperature. You can use this to get temperature readings from the T2-135 or T2-301 where there's no internal sensor. To build a temperature probe, just wire the middle pin of the DS18S20 to the 1-wire bus connection (pin 8 on the T2-135, pin 7 on the T2-301) and the left pin (with the flat, marked face toward you and the pins down) to ground. You can clip off the right pin. You should be able to run at least 10' of cable for the temperature probe, probably more depending on capacitance. Scott" I should add that the command is CMD TEMP, not CMD EXTTEMP as reported above for the T2-301. If you do CMD 1WIREWX ON, with the DS18S20, the temperature reported is incorrect. The version is 55076.
