PSST Technology(HongKong) CO., LTD.
Tunnel emergency telephone
Tunnel emergency telephone

Tunnel emergency telephone

Overview of tunnel emergency telephone PT-M-MT2
Analog weather resistant tunnel emrgency telephone are engineered to deliver reliable, high quality communications in extreme harsh environments. resulting in high reliability of the product long MTBF.

The shell electrostatic spraying powder coat finish available in yellow or grey, durable, eye-catching, and resistant to discoloration also easily cleaned. telephones can be wall mounted, or design the mounting bracket according to actual requirements.

Programmable auto dial and auto answer function, press to call help direct connected, self stop if the other side hangs up. incoming calls with very loud sound.
  • Overview
  • Specifications
  • Drawings

Main features of tunnel emergency telephone PT-M-MT2

  • The robust structure, weatherproof, temper-resistance
  • Weather resistant to IP66
  • Cold rolled steel panel, impact resistant
  • Wall mounted or embedded installation, simple to maintain
  • Telephone line powered, no need external power supply
  • Eye-catching color coated, high visibility
  • One button push to have an emergency call
  • Programmable auto answer function
  • Auto answer time: 1-3 seconds (can be adjusted)
  • Calling limited time: 1-9 minutes (can be adjusted)
  • Phone port: RJ11
  • Build in very loud speaker
  • Broadcasting distance: 20 square

Applications of tunnel emergency telephone PT-M-MT2

outdoor where you need a telephone with a high level of protection. examples tunnel,steel workshop, mines, bridge, power plant rooms, highway toll stations, police stations, prisons, railways lines, sports stadiums, airport baggage handling, underground stations and walkways, gate entries, barrier control and car parks. etc

Package of tunnel emergency telephone PT-M-MT2

Size: 300*220*50mm
Packaging material: PE EPE bag, carton
Net weight: 4.0KG
Gross weight: 5.0KG


  • OEM/ODM services are available
  • Normal use, non human damage, one year warranty

Specification of tunnel emergency telephone PT-M-MT2

DTMF dialing parameters
  • Low frequency group frequency:697.770.852.941HZ
  • High frequency group frequency: 1209.1336.1477HZ
  • Frequency deviation: ≤ 1.5%
  • Low frequency group level: -9 + 3dB
  • High frequency group level: -7 + 3dB
  • Level difference : 2 + 1dB
  • Harmonic total distortion at least low 20dB than the fundamental level
Ringing tone decibel
  • 70dB
Speaker decibel
  • 90dB (external power supply)
Phone impedance
  • 600 Ω
  • EEPROM (power off without loss data)
  • RJ11 or 2P terminal
Parameter setting 
  • by keyboard DTMF dial set
  • excess of 50,000 hours using
Non - linear distortion
  • <5%
  • 48v
Working environment
  • Operating  Temperature: 30°C to +65°C 

  • Storing Temperature: 40°C to +75°C 

Accessories material 
  • Button: Metal stainless steel
  • Housing: Cold rolled steel
  • Color: yellow red grey can be tailored
  • Logo, slogan can be tailored
  • One button or two button can be tailored
  • VoIP GSM Analog protocols can be tailored

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  • TEL:+86-755-89487736
  • FAX:0755-33671258
  • ADDRESS:NO. 20, Phoenix No. 1 Zone Industry, Fuyong Street, Bao'an District, Shenzhen City
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