Model | 993D | 993D+ | 993D+ upgrade version | 993D basic version |
Display | LCD Display | LCD Display | LCD Display | LCD Display |
Fahrenheit/Celsius | YES | YES | YES | YES |
Control mode | Digit PID | Digit PID | Digit PID | Digit PID |
Screen saving function | YES | YES | YES | NO |
No air protect | YES | YES | YES | YES |
Programming mode | NO programming | programming | Programming/ NO programming | NO |