The PLN-24CH12 Battery charger, 24V makes sure that the system batteries are always charged in public
address and emergency sound systems. Rack mountable, the unit charges lead‑acid batteries and simultaneously provides 24 V for system components. The battery charger is fully compliant and certified to EN 54‑4. The battery charger is a microprocessor controlled device of premium quality.

The LBB 1957/00 Call Station Keypad is an extension to the LBB 1956/00 Plena Voice Alarm System Call Station that adds seven additional zone-select keys. It 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.

The LBB 1956/00 call station is a stylish, high-quality call station with a stable metal base design, a flexible microphone stem and a unidirectional condenser microphone. It can make calls to selected zones (one to six and all-call) in a public address system built with the Plena Voice Alarm System. In addition to tabletop use, the special design allows it to be neatly flush mounted in desktops. The LBB 1957/00 Plena Voice Alarm System Keypad is an extension adding seven additional keys.

The LBB1990/00 Voice Alarm Controller unit is the heart of the Plena 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 standard, including full system supervision, loudspeaker line impedance supervision, a supervised emergency microphone on the front panel and a supervised message manager.

The Plena Voice Alarm System remote control panel allow the system to be controlled remotely from one or two remote locations. There are five models available:
• The fireman’s panel, which has oversized, illuminated controls and an all-call function
• The main RC unit, which duplicates the front panel of the Plena Voice Alarm System Controller
• The RC extension, which duplicates the front panel of the router
• The main RC kit
• The RC extension kit
The kits are a functional match to the remote control and the RC extension, with connectors on the front panel instead of controls and indicators.

The LBB1938/30 is a powerful 480 W power amplifier in a 3U high 19” case for rack mounting or tabletop use. LEDs on the front panel show the status of the amplifier: power, audio output level, and supervised functions. This high-performance unit fulfils a wide range of public address requirements at a surprisingly low cost.

The LBB 1930/20 is a powerful 120 W power amplifier in a 2U high 19” case for rack mounting or tabletop use. LEDs on the front panel show the status of the amplifier: power, audio output level, and supervised functions. This high-performance unit fulfills a wide range of public address requirements at a surprisingly low cost.

The LBB1935/20 is a powerful 240 W power amplifier in a 2U high 19” case for rack mounting or tabletop
use. LEDs on the front panel show the status of the amplifier: power, audio output level, and supervised
functions. This high-performance unit fulfils a wide range of public address requirements at a surprisingly
low cost.

The LBB1992/00 Voice Alarm Router is an expansion unit that can add six zones and 12 input contacts to the Plena Voice Alarm System. It can use the built‑in amplifier on the LBB1990/00 Plena Voice Alarm System Controller, and provides inputs and outputs for one or two amplifiers in a multi‑amplifier one or two‑channel system.