FTX00-B612 is a PID temperature controller with built-in timer, what it does is pretty straight forward, for application with time and temperature invovled, the timer will most likely to kick-in when temperature reach the setting value, for example, the setting value is SV, the process starts at the ambient temperature and temperature goes up to setting value, when temperature reach setting value, the timer start to counting down or up and hold the temperature at the SV for a preset time duration. this is very useful and widely being used in equipments like water bath, sterilizer, beer brewing, power oven coating machine etc. the maixmum time range 9999 minutes