A variable speed controller designed to replace and upgrade existing wired speed controllers to remotely adjust your AC Infinity fan. Each fan controller and receiver kit sets your fan speed using PWM technology (pulse width modulation) to optimally produce airflow and manage noise. It features 10-speed programming displayed with backlit white LED lighting in a circular array that progressively steps clockwise. Fan speed levels are retained using the onboard memory chip whenever power is shut off, resuming previous programming when your fan is reactivated. Please note only one receiver or wired controller may be used with each fan at a time, and cannot be used together. Product benefits: Indoor. Specifications: Height: 3.59 Inch; Length: 1.37 Inch; Width: 0.75 Inch; Receiver Length: 1.14 Inch; Receiver Height: 1.57 Inch; Receiver Width: 0.59 Inch; Devices Supported: 1; Wireless Signal: 433 MHz; Signal Range: 130 Feet; Adapter: 4-Pin Molex to UIS; Cord Length: 4.07 Inch; Operating Voltage: 2 - 3.6 Volts; Maximum Ampage: 0.1 mA; Consumption Wattage: 0.3 mW; Receiver Operating Voltage: 8 - 15 Volts; Receiver Maximum Ampage: 10 mA; Receiver Consumption Wattage: 100 mW.