Temp lock function
C-F: Temp switch C/F
CAL: Temp calibration +/- 50C
SLP: Auto-sleep function(1-60mins)
OFF: Auto-standby function(1-60mins)
H-L: Temp limited alarm function(beep 20~80 C)
PSD: Password protection (01-999 digits)
FAC: Reset
Application :Anti-static funtion by grounding