In this project we will wirelessly transmit information if current or voltage exceed. We will use RF technology .we will use RF module of 433Mhz. its available in the market. The project Current detector cum controller is very much useful for controlling the load in any industry. In this project we are measuring the current consumed by all the loads connected in a house. If the load current exceed the set value of current the load will be disconnected immediately. The heart of the project is microcontroller AT89S51 and current sensing transformer. The current sensing transformer is used to sense the current consumed by load. The current sensed by the current sensor is converted into voltage and feed to the ADC0804 for analog to digital conversion. The digital equivalent of the current is read by microcontroller AT89S51 from the ADC0804. The digital value of current is processed my microcontroller and displayed on LCD. We have provided a 16×2 LCD display for displaying the value of load current and set current. For changing the value of set current there are two keys called UP/DOWN keys. The UP/DOWN Keys can be used to increase or decrease the value of set current. One key is provided to reset the load supply after an over current trip. Five different loads are connected for testing purpose. The load supply can be can be switched ON/OFF through a relay controlled by microcontroller. We have used 5V regulated supply for microcontroller AT89S51, ADC0804, LCD and 12V unregulated supply for relay circuit.