This is a 3 pack of wireless on-off switches that will allow you to turn your ozone generator(s) on and off via a wireless remote that works up to 100 feet away. Rated for up to 1200 watts (our OG-5g commercial water ozonator is only 100 watts, so overkill on the wattage). We feel this is a "must have" product for our water ozonators customers. It's also wise to plug your microwave oven into one of these outlets and leave it off until you're ready to use it. Why? Even while off, microwave ovens emit harmful levels of radiation within 5 feet, and most are near the sink or oven where people sometimes spend a lot of time. We have an EMF meter and will upload a video soon showing the readings, shocking! You get 3 outlets, the remote, and a battery (12V A23 type) with your purchase.