16*32 16x32 Dot Matrix Control Display Module Diy Kit Red Green Dual-color Control Led Display Module Electronic Fun Kit - Instrument Parts & Accessories - AliExpress
304090068 Seeedstudio Ultrathin 16x32 Red LED Matrix Panel Arduino, Electronics and Robotics Electan, OnLine Store
Medium 16x32 RGB LED matrix panel - 6mm Pitch : ID 420 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits