Each time this happens, the clock stops and needs to be reset when the power returns in order to reflect the correct time. Remote Controls Used mostly with spa equipment, remote control devices allow you to operate pumps, heaters, lights, blowers, and other devices without actually going to the spa. Such devices are also available with switches at or in the spa, so you can control appliances without getting out. Air Switches Pool and spa air switches operate on the idea of compressed air in a hose, you force a switch to go on, off, or to a new operating position. A man named Len Gordon pioneered these devices with push buttons for pool and spa.
Air is forced into a flexible plastic tube by depressing the plunger in the middle.
The force is transmitted along the air tube until it reaches a simple, bellows-actuated electromechanical switch at the other end, turning it on, off, or to another position. These Air switches operate up to 200 feet from the button. You push the button once to turn on the circulation pump and heater, a second push to add a blower, a third push to add a booster, and a fourth push to turn it all off. Most of these four-function units allow combinations that vary the pattern, depending on your use preference or the additional equipment you have. You can mount this type of button near or even in the spa, for the electrical part of the air switch is usually located in a waterproof box, housing the wiring connections.