EMPACT Series

Communications & Control Equipment

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The Radio Alarm Link (RAL)^TM is a state-of-the-art supervised wireless alarm communications system. RAL is designed to work as either an independent system or in conjunction with the Mobile Map Plus annunciation system. RAL provides an economical method for interconnecting remote alarm equipment, or providing for remote annuncation of alarm signals, especially when the installation of conventional wiring is not practical. If you already have a Mobile Map Plus system, Radio Alarm Link can provide remote relay contacts directly from the existing Mobile Map data transmission system. The alarm information is received, checked for accuracy, and then provided as relay (optional) outputs, plus an audible warning signal.

The RAL is continuously supervised ``in use" for both communications from the encoder and transmitter units and jamming by outside signals. The RAL encoder periodically sends a test signal to each RAL receiver/decoder display regardless of whether alarms are present. Separate outputs indicate loss of communications with the central transmitter and/or the presence of a jamming signal.

The RAL encoder can format and transmit up to 64 independent alarm signals to each receiver/decoder. The FSK signaling scheme allows complete transmission in less than one second. A programmable feature of each receiver/decoder allows combinations of alarm, tamper, access, and secure signals up to a maximum of 64 signals.

The RAL receiver/decoder is provided in a convenient wall-mounted enclosure. The receiver section is contained in its own sealed module. Decoder and output circuitry is contained on plug-in circuit boards. Wiring connections are via screw-type terminal strips. An audio output jack enables testing without special test equipment. Optional internal battery backup is available.

• Error-Checking FSK Signalling System
• Total Transmission Time Less Than One Second
• Continuously Supervised ``in Use" for Both Communication and Jamming
• Programmable Combinations of Alarm, Tamper, Secure, and Access Signals
• Independent Radio Transmitter; No Interference from Other Facility Radios
• Up to 64 Independent Alarm Signals
• Optically Isolated Encoder Inputs
• Optional Battery Back-up on All Units
• Matching Control Room Graphic Display Panels Available

Any RAL receiver/decoder can be furnished with a matching linear or graphic display panel. The receiver/decoder mounts conveniently inside the display enclosure. Contact the factory for details on the matching annunciation systems available.

The RAL radio transmitter is built in a rugged metal enclosure enabling remote mounting near the antenna location. The radio transmitter is matched to an antenna and transmission line to provide the desired radio coverage. Interface to the alarm encoder is a two-wire ``telephone line" enabling encoder-to-transmitter mounting distances up to 3000 feet. A built-in transmission test button enables radio testing without special test equipment. Optional internal battery back-up is available. An environmentally sealed enclosure suitable for outdoor mounting is also available.

The RAL alarm encoder is provided in a convenient wall-mounted enclosure. Wiring connections are via screw-type terminal strips. A built-in test switch allows testing the complete RAL system without the need for special test equipment. Optional internal battery back-up is available.

Each RAL system is ``burned-in" and tested at the factory before shipment.