The Bosch LBB1956/00 Plena Voice Alarm Call Station is a professional 6-zone emergency paging microphone designed for use with Bosch Plena Voice Alarm systems. It enables clear and reliable emergency announcements, evacuation messages, and routine public address paging across multiple zones from a single control point. Engineered with Bosch’s proven voice alarm technology, this call station ensures high speech intelligibility, even in noisy environments. It features individual zone selection buttons, All-Call function, priority control, and LED status indicators, allowing operators to manage announcements efficiently during both normal operation and emergency situations. What is the main use of Bosch LBB1956/00? A-1 It is used for emergency voice evacuation and public address paging in multi-zone buildings. Is this suitable for emergency systems in India? A-2 Yes. Bosch Plena systems are widely used and accepted in India for fire and safety communication. How many zones can be controlled? A-3 It supports 6 individual zones plus All-Call for full-building announcements. Does it work during power failure? A-4 Yes. It operates through the Plena Voice Alarm Controller, which supports battery backup. Is it compatible with other Bosch Plena products? A-5 Yes. It is fully compatible with Bosch LBB1990/00 controllers and Plena Voice Alarm systems. Specifications Product Type 6-Zone Voice Alarm Call Station for Plena Systems Power Supply 24 V DC (from LBB1990/00 controller or 18–24 V DC/AC external) Current Consumption < 30 mA (plus < 15 mA per expansion keypad) Nominal Sensitivity 85 dB SPL (gain pre set 0 dB) Nominal Output Level ~700 mV Maximum Input Sound Level 110 dB SPL Gain Pre set 6 / 0 / -15 dB Limiter Threshold 2 V Compression Ratio Limiter 1:20 Distortion < 0.6 % (maximum input) Input Noise Level (Equivalent) ~25 dB SPLA Frequency Response 100 Hz – 16 kHz Speech Filter High-pass –3 dB @ 315 Hz, 6 dB/oct Output Impedance ~200 Ω Zone Selection 6 individual zone buttons All-Call Chimes / Priorities Supports wave file playback and 7 priority levels LED Indicators Zone selection, fault, emergency state Mounting Type Table top or flush-mount option Dimensions (H × W × D) 40 × 100 × 235 mm Weight Approx. 1 kg Colour Charcoal with silver accents Mic Stem Length ~390 mm Cable Length ~5 m Operating Temperature -10 °C to 45 °C Storage Temperature -40 °C to 70 °C Relative Humidity < 95 % non-condensing
