Servo motor connector shield (VRSSM): -Compatible with Arduino UNO and Arduino MEGA (not included) -Arduino UNO can drive max. 12 servo motors -Arduino MEGA can drive max. 36 servo motors -IR receiver -Beeper -Power indicator LEDs
Battery shield (VRBS1): -Power supply: 12 V booster for Arduino board (4 x AA batteries, alkaline or NiMH recommended but not included) -ON-OFF switch