LBB 1992 / 00 voice alarm router is an extension device that

 can add 6 zones and 12 input contacts to the plena voice alarm system. It can use the built-in amplifier on the LBB 1990 / 00 plena voice alarm system controller and provide input and output for one or two amplifiers in a multi amplifier single channel or dual channel system. It can use two amplifiers to provide call and background music dual channel operation to up to six different areas at the same time. In addition, single channel operation can be performed with only one amplifier. Multiple routers can also share an amplifier, including an internal amplifier on the controller device. Users can also use any number of amplifiers, up to the number of routers used. This controller supports a / b cabling. The basic function LBB 1992 / 00 is equipped with a set of relays for zone switching of power amplifier outputs to connect to different loudspeaker groups. Each area can be switched between the following channels: · call channel (call station selection, all call microphones or emergency activation) · background music channel (front panel selection) · off. In addition, a separate volume coverage relay contact is provided for each area to replace the volume control of local speakers. This ensures that priority messages are broadcast at the specified volume. For example, priority messages can be broadcast even when the local volume control is set to a low volume to play background music. Support 3-line and 4-line coverage schemes. The call or triggered input will activate these contacts for the corresponding area, as well as other voltage free contacts (the call is active) for control. The 24 VDC output with overload protection provides power to drive external relays without the need for external power. The user can select the main output channel or one of the input channels for monitoring through the headphone connector and LED indicator. Front of the controller and indicator lights · instrument (LED indicator, indicating - 20, - 6, 0 dB and power on) · 8 system fault LED indicators, 12 speaker line fault LED indicators, 6 emergency call area selection buttons, 12 emergency call area status LED indicators, 6 background music area selector buttons, and 6 background music area status LEDs Back of LED indicator light, two dip switches, device ID knob, power voltage selector, power switch, back of power socket interconnection, 12 way speaker output

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