BBI1 Universal BTicino built-in box 3 modules The BBI1 is an in-wall back box for the PM1122R and ZONE4R, the analog remote control for the PM1122 and ZONE4 pre-amplifiers. The BBI1 and PM1122R / ZONE4R have been designed to match perfectly with each other. No more searching for the right accessory – Apart products are available…