Project Telecom PT104-4B Analogue Push-to-Call Outdoor Phone - Grey

The Project Telecom PT104-4B Analogue Push-to-Call Outdoor Phone is a professional handsfree communications solution designed for immediate use in harsh industrial, outdoor and public-access environments. Featuring four push-to-call buttons, an open access weatherproof design, IP66-rated protection, vandal-resistant construction and standard analogue connectivity, the PT104-4B delivers reliable communication where conventional telephones are not suitable.

Designed for use across factories, warehouses, transport networks, utility sites, rail infrastructure, ports, marine facilities, tunnels, construction sites, car parks and public assistance points, the PT104-4B enables users to connect instantly to one of four pre-programmed destinations at the touch of a button. The four-button configuration provides enhanced flexibility, allowing direct access to multiple departments such as security, customer support, maintenance teams, control rooms, site management or emergency response services.

Its corrosion-resistant die-cast aluminium housing and open access design ensure dependable protection against dust, moisture and severe weather conditions, while still allowing immediate communication without the need to open a protective door.

Heavy-Duty Construction for Demanding Environments

Engineered for industrial and public-access use, the PT104-4B features a robust die-cast aluminium enclosure finished with a durable industrial epoxy powder coating and open front panel design.

This heavy-duty construction provides strong resistance to corrosion, moisture, dust, impact and vandalism. Tamper-resistant fixings and mounting hardware further enhance security, making it ideal for exposed installations where reliability is essential.

Designed for continuous operation, the unit delivers consistent performance across industrial facilities, transport hubs, utilities, marine environments, construction sites and other challenging locations.

Four Button Push-to-Call Operation

The PT104-4B is operated via four vandal-resistant stainless-steel push buttons. Each button can be independently programmed, allowing users to connect instantly to a selected destination without dialling.

Compared with single, dual or triple-button models, the four-button layout offers improved operational flexibility by providing direct access to multiple support functions from a single point. Typical applications include Security, Customer Services, Maintenance, Control Rooms, Technical Support, Site Operations and Emergency Assistance.

This makes the telephone particularly well suited to transport facilities, industrial sites, public help points and customer service locations where multiple contact routes are required.

The analogue version supports push-to-call autodial functionality and can be programmed using DTMF tones or the built-in programming keypad.

Standard Analogue Connectivity

The PT104-4B connects directly to standard analogue telephone lines, including PSTN and analogue PABX systems, requiring no IP network or additional communications infrastructure.

Powered directly via the telephone line, the unit offers straightforward installation and easy integration into existing analogue environments. Programming can be carried out remotely using DTMF tones or via the internal keypad.

This makes it an ideal solution for sites continuing to operate traditional telephony systems while requiring a durable, outdoor-rated communication point.

Handsfree Two-Way Communication

Designed for handsfree operation, the PT104-4B delivers clear full duplex voice communication, enabling natural conversations without the need for a handset.

This improves usability and reliability while reducing wear and maintenance requirements, making it well suited to busy industrial, transport and public environments.

Open Access Weatherproof Design

The PT104-4B features an open access front panel design that allows immediate use of all four call buttons without opening a protective door.

With IP66-rated protection against dust, rain and water ingress, the unit is suitable for year-round outdoor deployment in exposed environments. An IP67-rated version is available on request for installations requiring enhanced environmental protection.

Its sealed construction and corrosion-resistant housing ensure continued performance in harsh industrial and outdoor conditions.

Accessibility & User Safety Features

For users requiring hearing aid compatibility, an optional inductive coupler can be supplied to improve accessibility while maintaining simple handsfree operation.

*Note - Hearing aid symbol shown in product images for illustrative purposes only. Inductive coupler available on request at an additional cost.

The non-volatile memory retains programmed settings during power interruptions, ensuring reliable operation and reducing maintenance requirements over the product’s lifetime.

Features

• Heavy-Duty Analogue Push-to-Call Autodial Outdoor Phone
• Open Access Weatherproof Design
• Four Independently Programmable Stainless-Steel Push-to-Call Buttons
• Designed for Harsh Outdoor and Industrial Environments Including Warehouses, Factories, Manufacturing Facilities, Transport Infrastructure, Car Parks, Public Areas, Construction Sites, Ports, Docks and Airports
• Handsfree Two Way Voice Communication
• Standard Analogue Telephone Line Connectivity
• Compatible with PSTN and Analogue PABX Systems
• IP66 Weatherproof Protection
• IP67 Version Available on Request
• Corrosion-Resistant Die-Cast Aluminium Housing
• Industrial Epoxy Powder-Coated Finish
• Vandal-Resistant Construction
• Tamper-Resistant Mounting Bars and Fixings
• Non-Volatile Memory
• Remote Programming via DTMF
• Internal Programming Keypad
• Optional Inductive Coupler for Hearing Aid Compatibility (Available on Request – Additional Charge Applies)
• Lightning and Transient Protection to ITU-T K.21 Enhanced Levels
• Operating Temperature Range from -30°C to +65°C
• MTBF Exceeding 50,000 Hours
• CE, FCC and RoHS Compliant

Specifications

Connectivity

• Standard Analogue Telephone Line Operation
• Compatible with PSTN Networks
• Compatible with Analogue PABX Systems
• Four-Button Push-to-Call Autodial Function
• DTMF Remote Programming
• Internal Programming Keypad
• Powered Directly from Telephone Line
• MF (Tone) Dialling

Audio Features

• High Quality Handsfree Two Way Voice Communication
• Shrill Warble Ringing Tone
• Approx. 80 dBA Ringing Volume at 1 Metre

Construction

• Corrosion-Resistant Die-Cast Aluminium Housing
• Industrial Epoxy Powder-Coated Finish
• Four Stainless-Steel Push-to-Call Buttons
• Tamper-Resistant Mounting Bars and Fixings
• Open Access Front Panel Design
• Vandal-Resistant Construction

Protection Features

• IP66 Weatherproof Protection
• IP67 Available on Request
• Conforms to EN60529
• Lightning and Transient Protection to ITU-T K.21 Enhanced Levels
• Vandal-Resistant Design

Accessibility Features

• Optional Inductive Coupler for Hearing Aid Compatibility (Available on Request – Additional Charge Applies)

Environmental Specifications

• Operating Temperature: -30°C to +65°C
• Storage Temperature: -40°C to +75°C
• MTBF Exceeding 50,000 Hours

Power

• Powered Directly from Analogue Telephone Line
• No External Power Supply Required

Compliance

• CE Certified
• FCC Compliant
• RoHS Compliant

Dimensions & Weight

• Dimensions: 204mm x 334mm x 74mm
• Gross Weight -  6kg

Package Contents

• Project Telecom PT104-4B Analogue Push-to-Call Outdoor Phone (Grey)
• Tamper-Resistant Mounting Hardware
• User Documentation