Hardware Description and Reference for Avaya ... - Avaya Support

● ringer volume control,
● power failure operation,
● memory Loss Protection, and
● Hearing Aide compatibility.
This telephone model also provides access to switch features in the touch-tone mode. Access
is gained through the * or # dial keys and the appropriate feature access codes.
Avaya EA401 and EA401A Explosive Atmosphere telephones
Underwriters Laboratories, Inc. (UL) lists these Explosive Atmosphere telephones for the
following explosive atmosphere classifications and conditions:
● Class I explosive gas or vapors, group B, C, and D
● Class II combustible dusts, group E, F, and G
! DANGER:
DANGER: They are not to be installed in locations where acetylene gas may become
present in the atmosphere.
The EA401 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,
such as the EA20R Explosive Atmosphere Line Powered Telephone Ringer, is required.
Additionally, the EA10 Explosive Atmosphere handset is required.
Note:
Note: The EA401A Explosive Atmosphere telephone is an EA401 telephone that
comes already assembled with an EA20R ringer and EA10 handset.
The EA401 Explosive Atmosphere telephone has the following characteristics:
● A 10-foot (3-meter) handset cord
● Standard 12-button 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
● No handset volume control, in compliance with the FCC Waiver
● Designed for wall mounting
● Cast copper free aluminum with powder coat finish
● One-inch (2.54 cm) diameter buttons for gloves-on operation
● Magnetic Reed Hook Switch, with no moving parts, that activates when the handset is
removed from or placed in the telephone cradle
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