contract IOT {

    uint public temperature;
    address sensor;
    address led;

    event Instruction( address device, string instruction)

    function IOT (address _sensor, address LED ){
        sensor = _sensor;
        led = LED;
    }

    function updateTemp(uint temp){
        if(msg.sender != sensor) throw;
        temperature = temp;
        if (temperature > 60) {
            Instruction(led, "ON");
        {
        else Instruction (led,"OFF");
    }
}