SZ7520P Subzero Digital Temperature controller

The SZ 7510-P is a
single set point controller.The SZ 7515/25-P is a single set point controller with buzzer. The 7520/25-Pis a defrost controller, and
7529-P is also a defrost controller with an inbuilt power relay which can drive
compressor loads directly upto20Amps, thereby