PSST Technology(HongKong) CO., LTD.
Rugged Inmate Telephone
Rugged Inmate Telephone

Rugged Inmate Telephone

Overview of rugged inmate telephone PT-M-KT9

This rugged inmate telephone is constructed with robust stainless steel box,  zinc alloy die coasting keypad, manufactured to a high standard, offering increased resistance to vandanlism to ensure the effective stable communication is maintained all time, resulting in a highly reliable product with a long MTBF.

Except the normal telephone function, it can be programmble auto dial, pick up the handset auto dial the programmed numbers, if first number doesn't answer or is busy, dials next number automatically, untill it get through. speed dial and hot-line calling also can be customized.

Armoured cable handset for long usage and powered by the telephone line.
  • Overview
  • Specifications
  • Drawings

Main features of rugged inmate telephone PT-M-KT9

  • Standard analog phone, VoIP, and GSM can be tailored
  • Stainless steel housing robust constructed, impact resistant
  • Armored cable handset
  • Features a ruggedized zinc alloy die casting alphanumeric keypad
  • Waterproof grade: IP65-IP66
  • Auto dial, hotline, speed dial function can be programmable
  • Auto answer function be optional
  • Telephone line powered
  • Embedded installation
  • Extremely simple to maintain
  • Suit for hotline phone, help points, emergency call station box

Applications rugged inmate telephone PT-M-KT9

Widely used in the bank halls, airport, hotels, building entrances, subways, bus stations, highways, railways, metro, dock, marine applications, tunnels, underground mining, firefighter, industrial, prisons, Jail, parking lots, guard stations, police stations, ATM machines, stadiums, inside and outside building and so on

Package of rugged inmate telephone PT-M-KT9

Size: 260*180*60mm
Packaging material: PE EPE bag, carton
Net weight: 4.0 KG
Gross weight: 5.0 KG


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

Specification of rugged inmate telephone PT-M-KT9

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 
  • Handset: ABS
  • Keypad: Zinc alloy die casting
  • Hook: Aluminium alloy
  • Telephone line: Armoured cable
  • Housing: Stainless steel
  • Color: blue grey silver can be tailored
  • Logo, slogan can be tailored
  • Handset or handfree model 
  • With keypad or without keypad 
  • 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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