Servonaut SM3 Electronic Engine Sound Generator for Truck Models

Servonaut SM3 electronic engine sound generator for truck models - successor to the well-established SMT Sounds include ignition, horn, compressed-air brake, turbo charger 5 different motors to choose from Reversing beeper (depends on speed controller) No extra battery needed, can directly be powered from the main battery Supply voltage 7.2 to 12V, loudspeaker from 8 Ohm up Max. output 3W with 8 Ohm at 7.2V With small volume control (potentiometer) New Servonaut accessory available: equalizer SM-EQ for adjusting sound Dimensions: 55 mm x 28 mm x 13 mm Attention: If you don't use a Servonaut ESC or combine one with an AIR4 you need an additional Servo Y cable SYBlock for your SM3! Exception: When using M24 and AIR4 you don't need an extra Y cable.