Guardian’s ATEX-IEC rated DTT-50-Z analog telephone with heavy duty handset curly cord meets stringent Zone 1 safety requirements while still providing a high level of functions and features needed to keep your team communicating and operating both efficiently and effectively.

The DTT-50-Z is housed in a stylish IP66, static dissipative, high impact thermoset industrial housing and is RoHS compliant. Versatility is built-in right in, letting the user configure for desktop or wall mounting.

For use in Zone 1, Zone 21 environments.


Product Features

  • ATEX Zone 1, Zone 21 approved – T5 & T6 rated
  • Wide temperature range from -22°F to +140°F (-30°C to +60°C)
  • IP66, static dissipative, high impact thermoset industrial housing and handset
  • Reversible faceplate for desktop or wall mount configurations
  • Audio modes – handset & hands-free speaker phone or optional headsets. Note: when the optional headset is used the speaker phone feature is not available
  • Corrosion resistant hardware
  • Noise canceling microphone
  • Surge arrestor protects the user in the event of a high voltage spike
  • Self resetting fuse prevents damage to the electronic circuits in the event of a high voltage spike on the telephone line
  • Magnetic reed hook switch to reduce parts subject to wear
  • Factory set to tone (DTMF) Operation
  • Pulse dialing can be software configured in the field, 40:60 or 33:66
  • Removable handset retainer latches on cradle
  • Urethane coated water tight silicon keypad
  • Link, Release, Redial and Flash keys
  • Hearing-aid compatible (HAC) receiver
  • Receiver Volume Control provides a 16 dB range
  • Ergonomic heavy duty handset
  • Heavy duty curly handset cord
  • Built in ring detect relay to switch up to 240V @ 5A
  • Back lit LCD display – 2 line x 16 character: English, French or Spanish
  • 20 number memory including 10 quick dial
  • Programmable auto hang-up timer
  • Two M20 and one M12 access ports
  • Field repairable by authorized personnel
  • Does not require external power – operates on telephone line power
  • Order number: P3020