AIPHONE PB-1 പേജിംഗ് അഡാപ്റ്റർ നിർദ്ദേശ മാനുവൽ
PAGING ADAPTOR MODEL PB-1 With automatic background music cutout INSTRUCTIONS Allows connection of AIPHONE TB-F and TB-H systems to most existing paging or background music system. NAMES AND FUNCTIONS Volume control for background music. Bass control for background music. Treble…