Air conditioning systems are vitally needed by Cell sites. The heart of an Air conditioner is its compressor hence some protection means must be provided to the compressor to protect it from abnormal conditions such as over voltage, under voltage, Over Loading, etc. The efficiency of an Air conditioner depends on its Compressor. The compressor cause problems due unhealthy conditions such as Over voltage, Under voltage etc. & frequent start/stop without prior time delay for pressure equalization. To take care of A/C from such electrical hazards ‘PROTON ELECTRONICS’ has developed a new innovative product “CELL SITE CONTROLLER.” CELL SITE Controller is a Microprocessor based system which controls operation of two A/Cs & also protect them from electrical hazards. It also indicates respective faults by LEDs on front panel. System also provides facility to indicate High temperature Alarm. All the set points such as Voltage, Current, and Temperature are site selectable & user can easily set them by using keys provided on the front panel.