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BOSCH Voice Alarm System

Our product range includes a wide range of bosch lbb-1956 call station, bosch lbb1990 voice alarm controller and bosch lbb-1992 router.

BOSCH LBB-1956 Call Station

BOSCH LBB-1956 Call Station
  • BOSCH LBB-1956 Call Station
  • BOSCH LBB-1956 Call Station
  • BOSCH LBB-1956 Call Station
  • BOSCH LBB-1956 Call Station
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Approx. Price: Rs 36,672 / PieceGet Latest Price
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Product Details:

WeightApprox. 1 kg
ColorCharcoal with silver
Is It With MicrophoneWith Microphone
Voltage range24 VDC supplied by LBB 1990/00 (or 18 to 24 VDC or VAC external power supply)
Current consumptionLess than 30 mA (plus less than 15 mA per keypad)
Stem length with mic390 mm (15.35 in)
Nominal sensitivity85 dB SPL (gain preset 0 dB)
Cable length5 m (16.4 ft)
Operating temperature-10 oC to +45 oC (14 oF to +113 oF)
Storage temperature-40 oC to +70 oC (-40 oF to +158 oF)
Relative humidityLess than 95 percent
Nominal output level700 mV
Input noise level (equiv.)25 dB SPLA
Input sound level (max)110 dB SPL
Frequency response100 Hz to 16 kHz
Gain preset+6 / 0 / -15 dB
Limiter threshold2 V
Compression ratio limiter120
DistortionLess than 0.6percent (maximum input)
Speech filter-3dB at 315 Hz,high-pass,6 dB/oct
Output impedance200 ohm
ChimesAny wave file
Base dimensions40 x 100 x 235 mm (1.57 x 3.97 x 9.25 in)


  • Stylish six zone call station for the Plena Voice Alarm System
  • Six zone selection keys, all-call key and momentary PTT-key for calls
  • Selectable gain, speech filter, limiter, and output level for improved intelligibility
  • LED indications for zone selection, fault, and emergency state
  • Call station extension provides seven additional zone and zone group keys

Additional Information:

  • Item Code: LBB1956
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Bosch LBB1990 Voice Alarm Controller

Bosch LBB1990 Voice Alarm Controller
  • Bosch LBB1990 Voice Alarm Controller
  • Bosch LBB1990 Voice Alarm Controller
  • Bosch LBB1990 Voice Alarm Controller
  • Bosch LBB1990 Voice Alarm Controller
  • Bosch LBB1990 Voice Alarm Controller
Get Best Quote
Approx. Price: Rs 1.63 Lakh / PieceGet Latest Price
Product Brochure

Product Details:

Model NumberLBB1990/00
Bass control-8/+8 dB at 100 Hz
Frequency at fs=12kHz100 Hz to 5.5 kHz (+1/-3 dB)
Frequency at fs=16kHz100 Hz to 7.3 kHz (+1/-3 dB )
Frequency at fs=22.05kHz100 Hz to 10 kHz (+1/-3 dB )
Frequency at fs=24kHz100 Hz to 11 kHz (+1/-3 dB)
Frequency at fs=8kHz100 Hz to 3.6 kHz (+1/-3 dB)
Frequency response60 Hz to 18 kHz (+1/-3 dB at -10 dB ref. rated output)
Headroommore than 25 dB
Impedance22 kohm
Max power consumption600 VA
Battery Current max14 A
Memory capacity16 MB Flash ROM
Mounting19" rack
Number of messages255 max
Output power (rms/maximum)240 W / 360 W
Phantom power supply12 V (mic mode only)
Power consumption550 W
Power reduction on backup power-1 dB
Recording / playback time1000 seconds at fs = 8 kHz,333 seconds at fs = 24 kHz
S/N (flat at max volume)more than 70 dB
S/N (flat at min volume/ muted)more than 75 dB
Battery Power Voltage24 VDC,+/-15percent
Sensitivity200 mV
Speech filter-3 dB at 315 Hz,high-pass,6 dB/oct
Supervision DAC1 Hz pilot tone
Supervision Flash ROMContinuous checksum control
Treble control-8/+8 dB at 10 kHz
VOX trigger level-20 dB (100 V mic / 100 mV line) or via input contact
Voltage230/115VAC,+/-15percent,50/60 Hz
WeightApprox. 21.17 kg
ConnectorCinch,stereo converted to mono,unbalanced
Current inrush8 A
Dimensions (H x W x D)144 x 430 x 370 mm (19" wide,3U high)
DistortionLess than 0.1percent at 1 kHz
Frequency at fs=11.025kHz100 Hz to 5 kHz (+1/-3 dB)

  • Heart of the Plena Voice Alarm System
  • EN 5416 certified and EN 60849 compliant
  • Message manager and 240 W amplifier buildin
  • Sixzone outputs
  • 6 emergency and 6 business triggers


The Plena Voice Alarm Controller unit is the heart of the voice alarm system. It is the basis of the Plena Voice Alarm System, and has all the essential functionality for compliance with the EN 54 16 and EN 60849 standards, including full system supervision, loudspeaker line impedance supervision, a supervised emergency microphone on the front panel and a supervised message manager.

The messages can be merged to allow even more flexible use of pre-recorded announcements and evacuation messages. The controller can be used as a standalone system with up to six zones, or expanded to up to 120 zones using additional six-zone routers. Up to eight call stations can be connected. Interconnections are made using standard RJ45 connectors and shielded CAT-5 cable.

A built-in 240 W amplifier provides the power for the emergency call channel and BGM. Additional Plena Amplifiers can be added to provide two-channel operation. All amplifiers are supervised. The audio output uses standard analog audio 100 V line switching for full compatibility with the Plena family of public address equipment and Bosch EVAC-compliant loudspeakers. The system is configured using DIP switches for basic functionality and a PC for more advanced functions.

The controller has two BGM source inputs and a mic/ line input with configurable priority, speech filter, phantom power and selectable VOX activation. A total of 16 priority levels can be specified for microphone, call stations and trigger inputs for optimum system flexibility.

The powerful 240 W output section has six transformer-isolated 100 V constant-voltage outputs for driving 100 V loudspeakers in six separate zones. The 100 V-technique reduces line losses on longer distances and provides easy parallel connection of multiple loudspeakers. All zones may be individually selected from the front panel, and the BGM output level in each zone can be individually set in six steps. The controller supports A/B wiring.

Configuration software is provided on the CD included with the unit. The CD also includes many useful programs, such as MP3-ripping software, a sample- rate converter, various audio and visual tools, and free, MP3-coded music.

The amplifier output is also available as a separate output on 100 V and 70 V. A separate 100 V call-only output provides addressing for an area where BGM is not required but where priority announcements are. Six configurable volume-override output contacts are available for overriding local volume controls during priority calls. Both four-wire and three-wire schemes are supported. An LED meter monitors the output.

Up to 255 messages can be stored in the internal 16 MB flash ROM, without a need for battery backup. Each message can have any length within the total available capacity. Messages and configurations are uploaded from a PC via USB 2 into the memory, after which the unit operates without a PC connection. The standard WAV-format is used for the messages, and sample rates of 8 kHz up to 24 kHz with 16-bit word length (linear PCM) are supported. This gives up to 17 minutes of recording time with CD-quality signal-to- noise ratio.

The unit has 12 contact trigger inputs for business and emergency (EMG) calls. Each can be configured for a message consisting of a sequence of up to eight wave files. In this way some wave files may be used in various combinations with other messages, optimizing flexibility and the amount of storage space used . Multiple messages can be merged to form one integrated message. A zone selection, together with this sequence can be configured for each trigger input.


    Additional Information:

    • Item Code: LBB1990
    Yes! I am Interested

    BOSCH LBB-1992 Router

    BOSCH LBB-1992 Router
    • BOSCH LBB-1992 Router
    • BOSCH LBB-1992 Router
    • BOSCH LBB-1992 Router
    • BOSCH LBB-1992 Router
    • BOSCH LBB-1992 Router
    Get Best Quote
    Approx. Price: Rs 85,370 / PieceGet Latest Price
    Product Brochure

    Product Details:

    Main Voltage230/115 VAC, +/-10percent , 50/60 Hz
    MountingStandalone, 19" rack
    Operating temperature-10 oC to +55 oC (14 oF to +131 oF)
    Storage temperature-40 oC to +70 oC (-40 oF to +158 oF)
    Relative humidityLess than 95 percent
    Max power consumption50 VA
    Idle / max load current0.2 A / 0.3 A
    Battery Voltage24 VDC, +/-15percent
    Battery Current max1.8 A
    100 V output700 W rated per zone
    Typical / max load current0.51 A / 1.5 A
    Trigger Inputs12 x (6 EMG, 6 business)
    ConnectorsMSTB 2,5 /16-ST, floating
    SupervisionOn EMG inputs, programmable
    Supervision methodSeries / parallel resistor
    100 V input ConnectorMSTB 2,5 /16-ST
    100 V input Amp 1100 V / 70 V / 0 V
    100 V input Amp 2100 V / 0 V
    100 V input Power handling capacity1000 W
    Loudspeaker outputs12 x (2 x 6 zones)
    Volume override types3-wire, 4-wire (24 V), 4- wire failsafe
    Inrush current1.5 A 230 VAC / 3 A 115 VAC
    ConnectorMC 1,5/14-ST-3,5
    Rating250 V, 7A, voltage free
    General purpose relays (2x)NO / COM
    Dimensions (H x W x D)88 x 430 x 260 mm (19" wide, 2U high)
    WeightApprox. 3 kg

    • Expand the Plena Voice Alarm System with six zones
    • EN 5416 certified
    • 12 additional input contacts
    • Six volume override output contacts
    • Supervision within the Plena Voice Alarm System

    Additional Information:

    • Item Code: LBB1992-00
    Yes! I am Interested

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    Reviews & Rating



    Reviewed by 41 Users

    • 5★44%
    • 4★15%
    • 3★7%
    • 2★15%
    • 1★19%
    • User Satisfaction
    • Response62%
    • Quality     85%
    • Delivery   100%

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    Yash Kumar (Proprietor)
    Yash Infotech
    J-3/122, Kishan Kunj
    Laxmi Nagar, New Delhi - 110092, Delhi, India

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