美国Guardian防风雨电话机WRT-20-H

Guardian防风雨电话机WRT-20-H

Product Features

• Membrane Keypad/Curly Cord/Volume Control

  on Keypad

• Magnetic reed hook switch to reduce parts subject 

  to wear

• Encapsulated circuitry impervious to water 

  and particles

• Nylon hinge to prevent jamming caused by salt 

  or corrosion 

• Spring-loaded door for automatic closure 

• Surge arrestor to prevent voltage spike damage

• Heavy duty industrial handset

• Volume control to ensure communication in 

  noisy environments

• Electret noise reducing microphone for clear 

  communication

• Service temperature range from -40˚ to +140˚F 

  ( -40˚ to +60˚C )

• Waterproof connections & stainless steel fittings 

  for longer life

• Compact durable enclosure with mounting plate for 

  easy mounting

• Modular parts for easy service

• Hearing aid compatible

• Electronic ringer for reliability

• Yellow enclosure for high visibility. Optional Grey 

  enclosure and other custom options available

• Weather, dust & corrosion resistant

• Tone or pulse dialing for universal configuration

• Easily connected to any single line analog CO or 

  PABX telephone line

• Powder coated, corrosion protected steel faceplate

• Front access plate for ease of hook-up