The PowerLink 4 allows switch users to control up to 2 electrical appliances with single switches. Features 6 unique modes of control that allows you to define exactly how, and for how long, appliances will be turned on. Easily turn on and off two separate A/C electrical appliances with the PowerLink 4. Each appliance can be controlled with one wired switch or up to eight separate Big, Mini, or Jelly Beamer wireless switches. Six unique modes of operation (Direct, Latch, Timed, Seconds, Timed Minutes, Two-Switch, and Count) provide a variety of control options. Count mode allows for easy, precise data collection of activations and Two-Switch mode allows for collaborative activation for safety or cooperative use.