January 9, 2018The Telephone Interface RH2818I can automatically answer an incoming phone call and broadcast the caller's voice over the PA system and even to individual zones,and a microphone input is provided for ...view
January 9, 2018The M/S Amplifier Switch RH2621M monitors up to five main power amplifiers which will be switched automatically to the spare amplifier should any one fails,with five independent channels, it can also ...view
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