The player detector does exactly what its name implies - when a player comes within its configurable range, it will emit a redstone signal. The maximum range is determined by the power input, and the reaction time of the detector - the delay between a player entering a range and the signal output - is dependent on the speed input.

Required Power: 1024W

Range = (Power)/1024 m

Power Input: Bottom

Reaction Time: 100-(Speed/32)