Humidity Controller with Two Relays has a temperature control range between 0 to 65° C, its control operation is driven by a 10 turn helical potentiometer. The Humidity Controller has a high accuracy rate of 1% for RH and 0.10C for temperature and similar figures for least count. The Humidity Controller is provided with two relays for controlling temperature and humidity. The Humidity Controller with Two Relays is directly fed from micro processor self internal look up tables.