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Product Description: Product Description Controller Extension Panel (10 channels) SX-810 is designed to extend SX-450 matrix system. It provides 10 extra channels. In its front panel, 10 control keys and ten sets of in...

Country of Origin: Made In China     Product Description:   · Provide 20 independent speaker channels. · The speaker channels can control each zone’s on/off. · Provide automatic fire alarm drive input port. Spec...