So internally it will have a heater and a cooler, if the temperature has to go up, the heater has to be put on, if the temperature has to go down, the cooler has to put on.
तो आंतरिक रूप से इसमें एक हीटर और कूलर होगा, अगर  तापमान ऊपर जाता है तो हीटर चलेगा और अगर  तापमान नीचे जाएगा तो कूलर   चलेगा।