Avaya Inc.
Installation and Operation
Model EA401
Overview
Model EA401 Explosive Atmosphere Telephone
This Explosive Atmosphere telephone provides safe and reliable communication in hazardous locations, up to and including Class I Division 1. Only standard wiring and fittings are required to connect the telephone to the system; no barrier is necessary. Since the heavy duty cast aluminum enclosure is basically soundproof, an external device to signal incoming calls is required.
Features
Enclosure
•cast copper free aluminum with powder coat finish
Internal Sealed Cavities
•completely seal the unit
Keypad
•standard configuration with an additional row of buttons for Last Number Redial, Link/Flash to access PABX features and Line Release to duplicate hanging up the handset
•one inch diameter buttons for
Circuitry Coating
•circuit boards have a UV cured epoxy coating which provides protection from corrosive agents such as H2S, SO2, and NH3, and environments with high humidity
Magnetic Reed Hook Switch
•no moving parts, activates when the handset is removed from or placed in the telephone cradle
Tone (DTMF) Operation
•selectable in the field; factory set to operate to tone (DTMF) exchanges
Intrinsically Safe Handset Operation
•the output from the telephone to the handset passes through an intrinsically safe barrier ensuring a high degree of safety
Field Replaceable Handset
•the 10’ handset cord is designed for industrial applications and is attached to the telephone by a connector for ease of replacement
Field Replaceable Fuse
•a fitting in the bottom of the enclosure provides access to the fuse
•the handset is compatible with inductively coupled
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