Guardian Telecom Inc.
Installation and Operation
DTT-50 & DTT-60 Telephones
Page 3
Overview
DTT Telephones
DTT telephones provide safe, reliable communications in areas that are prone to high humidity,
chemical vapors, dust and physical abuse. Hands Free operation is standard on all models and the
telephones can be programmed for speed dialing. All models have the option of installing a
Supplemental receiver that can be held against the ear opposite to the handset, in order to improve
speech recognition in noisy environments. In place of a Supplemental receiver a headset providing
even greater flexibility can be installed.
Features
Housing and Handset
•
high impact thermoset – static dissipative
Mounting
•
desk top or wall mounted
Audio Modes
•
handset and hands-free or optional headset
Resettable Fuse
•
prevents damage to the electronic circuits in the event of a high
voltage spike on the telephone line
Magnetic Reed Hook Switch
•
no moving parts
LCD Display
•
for ease of user interface, multi-language capable
Built In Ring Detect Relay
•
250VAC 5 Ampere Ring Detect Relay, no need for external RDR
Tone (DTMF)/Pulse Operation
•
factory set to tone (DTMF) dialing
•
60:40 or 66:33 pulse dialing can be ordered or configured in the field
Handset Cord
•
6’ heavy duty curly cord on DTT-50
•
armored cord on DTT-60
Hearing-Aid Compatible (HAC) Receiver
•
compatible with inductively coupled hearing-aid devices
Receiver Volume Control
•
Switch on keypad provides 15dB of audio range
Wide Temperature Range
•
-30º C to +60º C (-22º F to +140º F)
