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Bosch LBD8921 Wall Mounting Handset Station

(4 customer reviews)
BOSCH

The Bosch LBD8921 Wall Mounting Handset Station is a heavy-duty communication terminal designed for rugged industrial environments. It enables page announcements and private party-line communication, ensuring smooth and clear plant-wide coordination during critical operations.

24,703.00 29,150.00 Excluding Tax

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The Bosch LBD8921 Wall Mounting Handset Station is purpose-built for industrial communication systems where durability, clarity, and operational reliability are essential. Ideal for factories, warehouses, power plants, and manufacturing facilities, the station maintains flawless communication even in harsh environmental conditions, ensuring that essential messages are delivered without interruption.

Bosch LBD8921 Wall Mounting Handset Station Designed with a robust rear housing and a front plug-in electronics module, the unit integrates a handset for secure two-way communication and paging. The rear enclosure contains the built-in transformer, DC power supply with thermal protection, and terminal blocks for connecting the party-line cable, external DC power, and loudspeaker mute links. This makes installation flexible and dependable across industrial infrastructures.

Communication Functions

The system supports both paging and party-line communication, allowing users to broadcast important announcements throughout the plant or speak privately with other stations:

  • The operator lifts the handset and presses the page button for facility-wide announcements

  • Responding operators pick up nearby stations

  • Up to six users can then communicate in duplex mode on the party line — without loudspeaker broadcast

This setup ensures that emergency communication, maintenance coordination, and production updates can be handled efficiently and discreetly.

Simple and Effective Operation

The front panel includes a paging push button and loudspeaker mute function for focused communication. A screwdriver-adjustable volume controller allows users to modify speaker volume to match their local noise levels — critical in changing industrial sound environments.

The functional switch is customizable to support additional features such as:

  • Priority call operation

  • External alert indicators

  • Safety-specific signaling


🔸 Bosch LBD8921 Wall Mounting Handset Station Key Features

  • Rugged design for harsh industrial environments

  • Paging + duplex party-line communication

  • Supports up to six callers on a party line

  • Front-panel controls: Page, Speaker Mute, Volume Adjust

  • Rear housing with built-in power supply & thermal fuse

  • Ideal for plant-wide emergency and operational announcements

  • Easy installation with rear terminal blocks

LBD8921/02

Brand

Technical specifications

Electrical

Power Supply voltage 220VAC + 10% 50/60Hz or

24VDC (110/240VAC tapping on request)

Current consumption 180 mA at 220VAC,850 mA at

24VDC

Microphone
Type Dynamic noise canceling
Internal impedance 230Ω±15%
Sensitivity 0.7mV/Pa
Receiver
Type Dynamic
Internal impedance 230Ω±15%
Sound Pressure Level (SPL) 116 dB +3/-1 dB (Typically at 1kHz)
Line Amplifier Section
Input sensitivity 3mV (adjustable by preset internally)
Input impedance 4kΩ Resistive
Load impedance 240Ω Resistive
Output 2V
Distortion 1% at 1kHz
Residual noise level -50dB (w.r.t. rated output)
Frequency response 200Hz to 12kHz (+1/-3dB)
Gong tone frequency 600 Hz ±100 Hz
Gong tone duration 800mS +500/-200 mS
Power Amplifier Section
Input sensitivity 2V +/- 0.2V
Input impedance >25kΩ
Distortion 1%at1kHz
Frequency response +1/-3dB at 200Hz to10kHz
Residual noise level -50dB (w.r.t. rated output)
Tone control Bass cut filter (minimum cut 10dB at 200Hz)
Output power 15W r.m.s. across 8Ω or 16Ω load on relevant tap
Protection Short circuit protection on output
Dimension(HxWxD)mm 353x150x225
Weight 7 kg without packing
Colour Front panel – Dark Brown Rear housing – Beige
Operating temperature -20°Cto+55°C
Storage temperature -40°Cto+70°C
Relative humidity 95%
Environmental protection IP 52, with weather proof cover IP 55

Based on 4 reviews

4.0 overall
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  1. pushpa

    Awesome Product !

    pushpa

  2. Mano Balaji

    Wonderful Product I purchased from Sakthi AV Tronics Bosch Wall Mounting Handset Station. Very simple to use and the build in quality Awesome.

    Mano Balaji

  3. Amenda

    Bosch Wall Mounting Handset Station is one of the best product that i ever purchased. Sakthi AV Tronics deliver the product on time and we got in very reasonable price.

    Amenda

  4. Urmila

    Good Product. Recommend everyone. Thanks Sakthi AV Tronics

    Urmila

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