subplot(411), plot(time, relay), grid on, ylabel('Posisi Relay'), xlabel('High = Heater ON/Kipas OFF, Low = Heater OFF/Kipas ON')
subplot(412), plot(time, suhu), grid on, ylabel('Thermometer [C]')
subplot(413), plot(time, error), grid on, ylabel('ERROR')
subplot(414), plot(time, control), grid on, ylabel('Control'), xlabel('time [sec]')