/set?al=L,H[,L,H...] - Set probe alarms thresholds.
-- Setting to a negative number will disable the alarm
-- Setting to 0 silences the alarm but leaves it enabled (it will ring again if the temperature is still outside the threshold)
Examples:
# Set the pit low alarm to 200F
/set?al=200
# Set the pit low alarm to 200F and the high alarm to 250F
/set?al=200,250
# Leave the pit alarms where they are and set the Food1 alarm high to 180F
/set?al=,,,180
# Disable the pit low alarm (the 200 doesn't really matter)
/set?al=-200