Shelly BLU Wall Switch 4 - Stand-Alone _MAKE_COMP_OTHER Recommended operating voltage 12-30V Absolute

Recommended operating voltage 12-30V Absolute maximum operating voltage 32V Maximum output power 2x100W into 4Ohm THD+N <0

making it ideal for retro gaming builds

In theory you could also use this with a Pi A+ or B+/2/3 but it wouldn't be very hand-held

Uses hue and saturation detection instead of RGB for lighting-independent performance

3V-logic-level input to determine I²C slave addresses of the three ICs (see below)

Shelly BLU Wall Switch 4 - Stand-Alone _MAKE_COMP_OTHER Recommended operating voltage 12-30V AbsoluteThe Shelly BLU Wall Switch 4 is a smart four button Bluetooth control interface. This is the standalone version, intended to be used as a standalone remote control without affixing it to a wall (but feel free to get creative with mounting options!). The switch connects to other Shelly devices on the network through BLE (Bluetooth) technology and contains four buttons, each of which supports multi click (single, double, triple and long press clicks)