Sound Unit for RC Tractors Programming Cable for RC Tractor Sound Unit Description: Sound Unit for RC Tractors This sound unit is developed for electric powered RC tractors. It could be used to 1/32, 1/24 & 1/18 RC tractors, especially suitable for 1:32 Siku Lanz Eil-Bulldog RC Tractor 2.4G conversion. Technical Data: Dimension: 11 x 23, 5 x 3, 2mm (min.11x 16x 3, 2mm) Voltage: 3V to 5V (supplied by the receiver) Note the maximum supply voltage of 5V! Current: app. 10m A without sound, app. 250m A at max. volume Speaker: 8-32 Ohm Output power: 1W at 8-Ohm at 5V; 0, 6W at 8-Ohm at 3 V Proportional inputs: 1ms to 2ms Sound quality: up to 22 k Hz Programming Cable for RC Tractor Sound Unit This programming cable is developed specially for RC Tractor Sound Unit. With this programming cable you could switch 4 different tractor sounds provided, & you can reveal so much new function on Sound Unit, not only program new sounds, but you can also use channel 3 to choose from 16 different sound or & light control functions. For more information, please refer to:http://www.banggood.com/ Sound-Unit-For-132-124-118-RC-Tractors-132-Siku-Lanz-Eil-Bulldog-RC-Tractor-2_4G-Conversion-p-1034926.htmlhttp://www.banggood.com/ Programming-Cable-For-RC-Tractor-Sound-Unit-Programming-New-Sounds-Choosing-Different-Sounds Light-p-1034925.html For TBS Micro Sound Unit manual, Programming Software, Programming Software Manual, USB Driver, Sound library, Please click HERE. Package Included:1 X Sound Unit 1 X Programming Cable