With the PowerLink 4, switch users can control up to 2 electrical appliances with a switch. It also features 6 unique modes of control that allow you to define exactly how and for how long, appliances will be turned on. This makes it a great tool to engage children of different ages and abilities to learn cause and effect, build independence, and take part in all activities in a fun and meaningful ways. Modes of Control: Direct: Behaves like a traditional switch. Count: Behaves like Direct, shows number of activations Two-Switch: Behaves like Direct, both switches must be activated Timed Seconds: Runs appliance from 1 to 99 seconds Timed Minutes: Runs appliance from 1 to 99 minutes Latch: First activation turns appliance ON; second activation turns it OFF Common Uses: Engage anyone who has trouble with standard controls or for whom direct access to appliances may be unsafe. Activate a blender during a cooking activity Turn on a fan during sensory play Promote cooperative play in two-switch mode to controla device Features: Control up to 2 A/C appliances with one switch 6 modes of operation: Direct, Latch, Timed Seconds, Timed Minutes, Two-Switch, and Count Two-Switch mode allows collaborative or safety-based activation Includes 2 Jelly Bean Twist switches