The LBB 1957/00 Plena Voice Alarm Keypad is an extension to the LBB 1956/00 Plena Voice Alarm Call Station that adds seven additional zone selection keys. It connects to the call station and allows selection of up to seven additional zones or zone groups. Up to eight keypads can be connected to a single call station. The keypad uses LED indicators to show the active zones and has a durable metal base for tabletop or flush mounting.

1. Communications Systems | LBB 1957/00 Plena Voice Alarm Keypad
LBB 1957/00 Plena Voice Alarm Keypad
▶ Seven zone selection keys
▶ LED indications for zone selection
▶ Up to eight keypads can be connected together
▶ EN 54‑16 and EN 60849 compliant
The keypad is an extension to the LBB 1956/00 Plena Safety acc. to EN 60065
Voice Alarm Call Station that adds seven additional zone- Immunity acc. to EN 55103-2
select keys. It has the same stable metal base as the call
Emission acc. to EN 55103-1
station. In addition to tabletop use, the special design
Emergency acc. to EN 54‑16 / EN 60849
allows it to be neatly flush-mounted in desktops.
Technical Specifications
Functions
Each call station supports six zone selections. Connecting Electrical
one of these units, adds seven zones or zone groups that Power Supply
can be selected. Up to eight keypads can be added to an
Voltage range 24 VDC supplied by LBB 1956/00
LBB 1956/00 call station. LEDs on the keypad indicate the
active zones. Current consumption <15 mA
Controls and indicators Mechanical
• Seven zone selection keys Base dimensions 40 x 100 x 235 mm
• Seven zone selection LEDs (1.57 x 3.97 x 9.25 in)
• Eight DIP switches
Weight Approx. 1 kg
Interconnections
Mounting Bracket coupled with LBB 1956/00 or oth-
• Two RJ45 jacks er LBB 1957/00
• 24 VDC input
• Keypad connector Color Charcoal with silver
Environmental
Certifications and Approvals Operating temperature -10 ºC to +45 ºC (14 ºF to +113 ºF)
Storage temperature -40 ºC to +70 ºC (-40 ºF to +158 ºF)
Region Certification Relative humidity <95%
Europe CE Declaration of Conformity
www.boschsecurity.com

2. 2 | LBB 1957/00 Plena Voice Alarm Keypad
Ordering Information
LBB 1957/00 Plena Voice Alarm Keypad LBB1957/00
an extension to the LBB 1956/00 Plena
Voice Alarm Call Station that adds seven ad-
ditional zone-select keys
Americas: Europe, Middle East, Africa: Asia-Pacific: Represented by
Bosch Communications Systems Bosch Security Systems B.V. Robert Bosch (SEA) Pte Ltd
12000 Portland Avenue South P.O. Box 80002 11 Bishan Street 21
Burnsville, Minnesota 55337, USA 5600 JB Eindhoven, The Netherlands Singapore 573943
Phone: +1-800-392-3497 Phone: + 31 40 2577 284 Phone: +65 6571 2600
Fax: +1-800-955-6831 Fax: +31 40 2577 330 Fax: +65 6571 2698
audiosupport@us.bosch.com emea.securitysystems@bosch.com apr.securitysystems@bosch.com
www.boschsecurity.com www.boschsecurity.com www.boschsecurity.com
© Bosch Security Systems Inc. 011 | Data subject to change without notice
T1325966219 | Cur: en-US, V19, 27 Jan 2011