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The Intrinsically Safe (IS) Telephone System is a two-part system requiring a safety barrier and a telephone handset that has been designed to maintain the outward appearance and basic operation of a conventional telephone system.
Each barrier is housed singly, in a group of four or in a 19" rack installations for 36 plus barriers and subsequent lines. Final configuration is determined by site requirements.
The IS 2000 telephone is approved for use in both Group I and Group IIC hazardous areas and supports additional features such as single push button alarm and high output IS incoming call sounder alert. The telephones are of a robust design and cast construction and exhibit high speech quality.
The system operates as a standard analogue telephone system with the Piezo sounders creating the audible ring and the alert light flashing when the telephone rings. The dialling technique and use of the telephone is identical to ordinary telephones.
The system is fully approved by the Australian Communication Authority (A-Tick - N3463), the New South Wales and Queensland Department of Mineral Resources and Quality Assurance Services of Australia. The system has been tested at approved laboratories and is entity approved. The System Barriers carry a rating of Ex (ia) IIC TAMB = 45OC and the Telephone is rated Ex (ia) I/IIC T4 IP55.
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