Lutron PJ2-4B-GWH-L01 Pico 4 Button, Wireless Zone Control Keypad.
The Lutron Pico four-button wireless remote lets you control Lutron wireless control devices from anywhere in the area. This battery-powered device is easy to set up and use. It requires no external power or communication wiring to operate.
With the Lutron Pico four-button remote, you have complete control of your Caseta or RadioRA 2 dimmers at your fingertips. Push a button on this Pico remote for full light and maximum brightness. Push the bottom button to turn the lights off. The center buttons lets you adjust the light to exactly the right level that you want to program. This product also features a red night light. It works through walls up to 30 feet from the dimmer and up to 60 feet within line of sight.