Transformer control

CONTROL CENTER COTINA KS-10B 10 WAY SPEAKER SWITCH BOX CONSOLA SONIDO PARA SELECCION DE SALIDA DE PARLANTE consola de sonido cotina KS-10B Seleccion salida De Parlantes The device is especially designed for the use of Public Address System. Ten pieces of speakers can be controlled independently. Any one piece or up to all ten pieces of speakers can be played at the same time. The KS-10B is not suitable for switching low impedance ?4-32 Ohm? loudspeakers, use only line-loudspeakers with a built-in 100V transformer. The sum of the speaker ratings may not exceed the effective rating of the amplifler. Dimension: 200?L?110?W?53?H?mm