Swimming pool water level controller

An apparatus for controlling water level in a pool, the apparatus comprising:

• a water level sensor adapted to be immersed in the pool;
• a processor electrically connected with the sensor to detect a preprogrammed low water in the pool;
• a wireless transmitter electrically connected with the processor for sending a digitally encoded low water signal;
• a housing containing the processor and the transmitter;
• a power source for powering the processor and the transmitter;
• a remote receiver for receiving the signal from the transmitter and turning on a valve to add water to the pool;
• a wave filter timer within the processor that turns on for a selected interval when the processor detects low water;
• the processor further has means for delaying the transmitter from sending the low water signal until the end of the selected interval and for causing the transmitter to send the low water signal at the end of the selected interval only if the processor continuously detects low water during the entire selected interval;
• wherein the low water signal sent by the transmitter is a momentary signal;
• and
• wherein the receiver has an overfill counter that turns on for a selected interval when the receiver receives one of the low water signals from the transmitter, the overfill counter adapted to cause the valve to remain on until the overfill counter reaches a selected count, and wherein the receiver has means for resetting the overfill counter prior to reaching the selected count each time that the receiver receives subsequent low water signals from the transmitter.