Installation and Operation
DTR-51 & DTR-61 Ringdown Telephones
Page 4
Overview
DTR Ringdown Telephones
DTR ringdown telephones provide safe, reliable communications in areas that are prone to high
humidity, chemical vapors, dust and physical abuse. A Headset option is available to improve speech
recognition in noisy environments.
Features
Housing and Handset
•
high impact thermoset – static dissipative
Mounting
•
desk top or wall mounted
Audio Modes
•
handset
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
Built In Ring Detect Relay
•
250VAC 5 Ampere Ring Detect Relay, (no need for an external RDR)
Handset Cord
•
4' heavy duty Coil cord on DTR-51
•
armored cord on DTR-61
Hearing-Aid Compatible (HAC) Receiver
•
compatible with inductively coupled hearing-aid devices
Receiver Volume Control
•
Switch in handset provides 15dB of audio range
Wide Temperature Range
•
-30º C to +60º C (-22º F to +140º F)