BTC 9300. BTC 9300 is a 1/16 DIN (50x50mm) size panel mount controller used for a range of different applications. The Fuzzy Logic plus PID microprocessor- based temperature controller, incorporate two bright, easy to read 4-digit LED displays, indicating process value and set point value. The Fuzzy Logic technology. BTC-9090 PID Control with programmable input/outputs.