Wireless battery-powered daylight sensor

A wireless sensor comprising:

• a photosensitive circuit configured to generate a light intensity control signal in response to a light intensity;
• a wireless transmitter configured to transmit wireless signals;
• and
• a controller coupled to the photosensitive circuit and the wireless transmitter, the controller configured to transmit wireless signals in response to the light intensity control signal;
• wherein the controller is configured to:
• sample the light intensity control signal to collect a first plurality of samples during a first time interval, and a second plurality of samples during a second, subsequent time interval, the first and second time intervals being non-overlapping;
• determine a minimum sample among the first plurality of samples;
• determine a minimum sample among the second plurality of samples;
• determine a maximum sample among the second plurality of samples;
• calculate a first adjustment percentage based on a difference between the minimum sample among the first plurality of samples and the minimum sample among the second plurality of samples;
• calculate a second adjustment percentage based on a difference between the minimum sample among the second plurality of samples and the maximum sample among the second plurality of samples;
• and
• transmit a digital message if the first adjustment percentage is greater than a first predetermined amount and the second adjustment percentage is less than a second predetermined amount.