Sri Vari Technologies

The Plena 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 flushmounted in desktops. The Plena Voice Alarm Keypad (LBB 1957/00) is an extension adding seven additional keys.

Additional Information:

• Item Code: LBB1956
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: COIMBATORE
• Production Capacity: 100
• Delivery Time: One week
• Packaging Details: Carton Boxes

The Plena Voice Alarm Controller unit is the heart of the 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 and EN 60849 standards, including full system supervision,
loudspeaker line impedance supervision, a supervised
emergency microphone on the front panel and a supervised message manager.
The messages can be merged to allow even more flexible use of pre-recorded announcements and evacuation messages. The controller can be used as a stand-alone system with up to six zones, or expanded to up to 120 zones using additional six-zone routers.
Up to eight call stations can be connected.Interconnections are made using standard RJ45 connectors and shielded CAT-5 cable.
A built-in 240 W amplifier provides the power for the emergency call channel and BGM. Additional Plena Amplifiers can be added to provide two-channel operation. All amplifiers are supervised. The audio output uses standard analog audio 100 V line switching for full compatibility with the Plena family of public address equipment and Bosch EVAC-compliant  loudspeakers. The system is configured using DIP switches for basic functionality and a PC for more advanced functions.

Additional Information:

• Item Code: LBB1990
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: COIMBATORE
• Production Capacity: 100
• Delivery Time: One Week
• Packaging Details: Carton Boxes

The Plena system pre-amplifier is a versatile, highperformance unit with call and mono BGM (background music).
It fulfills a wide variety of public address requirements at a surprisingly low cost. It can provide dual channel operation for simultaneous calls and BGM for up to six different zones, using two Plena amplifiers.

Additional Information:

• Item Code: LBB1925_10
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: COIMBATORE
• Production Capacity: 100
• Delivery Time: one week
• Packaging Details: Carton Boxes

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.

Additional Information:

• Item Code: LBB1957
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: COIMBATORE
• Production Capacity: 100
• Delivery Time: One week
• Packaging Details: Carton Boxes

Up to 12 messages can be stored in the internal 64Mbit EEPROM, without the need for data retention battery backup. Each message can have any length within the total available capacity. A PC uploads messages and configurations via RS-232 to the unit, which can then operate without a PC.
The standard WAV format is used for messages with sample rates of 8 kHz to 24 kHz with 16-bit word length (linear PCM).
This gives up to 500 seconds of recording time with a CD¿¿¿quality signal-to-noise ratio. The use of linear PCM instead of a compressed audio format, such as MP3, ADPCM and u-law/A-law, ensures high-quality playback of all types of audio signals, including sound effects and special tones, such as attention chimes.
The unit has 12 contact closure trigger inputs for announcements. Each can be configured for a sequence of up to four messages from those available.
In this way messages can be used in combination with other messages, optimizing flexibility and storage space usage. When used together with the six-zone LBB 1925/10 Plena System Pre-Amplifier, a zone selection can be configured for each trigger input.
The message manager communicates this selection to the
LBB 1925/10 via an RS-232 connection. Continuous activation of a trigger input causes the corresponding message sequence to repeat.

Additional Information:

• Item Code: LBB1965
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: COIMBATORE
• Production Capacity: 100
• Delivery Time: One week
• Packaging Details: Carton Boxes