Leviton WSP20-9D0 LevNet RF 902 MHz Line Voltage Relay Receiver in 100-277V, 50/60 Hz Used as part of the levnet RF 902 MHz wireless Lighting control system Receives signals from other levnet RF self-powered sensors, switches and other transmitters to control Lighting and other devices or loads Transmission range of 50-150 Low power consumption that saves 70% over other wireless technologies Meets energy code requirements for ASHRAE 90.1, title 24 and IEC