Description
Bosch LBB 1957/00 Plena Voice Alarm Keypad in Bangladesh
The Bosch LBB 1957/00 keypad is an extension to the LBB 1956/00 Plena Voice Alarm Call Station that adds seven additional zone-select keys.
The LBB1957/00 has the same stable metal base as the call station. In addition to tabletop use, the special design allows it to be neatly flush-mounted in desktops.
Key Specifications
| Voltage range | 24 VDC supplied by LBB 1956/00 |
| Current consumption | <15 mA |
| Base dimensions | 40 x 100 x 235 mm(1.57 x 3.97 x 9.25 in) |
| Weight | Approx. 1 kg |
| Mounting | Bracket coupled with LBB 1956/00 or other LBB 1957/00 |
| Color | Charcoal with silver |
| Operating temperature | -10 ºC to +45 ºC (14 ºF to +113 ºF) |
| Storage and transport temperature | -40 ºC to +70 ºC (-40 ºF to +158 ºF) |
| Relative humidity | <95% |
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