Power supply: AC/DC 9V
Board size: 80mm x 50mm
Remote controller length: 88mm
Potentiometer handle length: 20mm
Audio amplifier volume control board microprocessor.
Potentiometers ALPS potentiometer, durable.
With remote indication status.
With remote control switch machine function. (Not include relay)
Each boot automatically transferred to the smallest sound and automatically transferred to the 9 o'clock position, very intelligent, so it can ensure not appear every time you turn a great voice.
3 x AC/DC 9V Volume control board
3 x Remote controller (does not include the battery)