Project Telecom PT104-4B GSM / 4G Push-to-Call Outdoor Phone - Yellow

The Project Telecom PT104-4B GSM / 4G Push-to-Call Outdoor Phone is a professional-grade wireless handsfree communications solution featuring an open access weatherproof design for reliable operation in harsh industrial, outdoor and public-access environments. Combining four push-to-call functionality, GSM / 4G mobile connectivity, IP66 weatherproof protection and vandal-resistant construction, the PT104-4B delivers dependable communications where fixed telephone lines or network infrastructure are unavailable or impractical.

Designed for factories, warehouses, transport infrastructure, utility sites, rail networks, ports, marine environments, tunnels, construction projects, remote facilities, car parks and public assistance points, the PT104-4B enables users to connect with one of four independently programmed telephone numbers at the press of a button. This four-button configuration provides maximum flexibility, allowing separate contacts for security, customer assistance, maintenance teams, control rooms, site management or emergency support services.

Its corrosion-resistant die-cast aluminium housing and open access weatherproof design provide reliable protection against dust, moisture and harsh weather conditions whilst allowing immediate access to communications without opening a protective door.

Supporting GSM and 4G mobile networks, remote SMS programming and Micro SIM operation, the PT104-4B provides a flexible communications solution for locations where traditional wired telephony or IP infrastructure is unavailable.

Heavy-Duty Construction for Harsh Environments

Engineered specifically for industrial and public-access applications, the PT104-4B features a corrosion-resistant die-cast aluminium enclosure with an industrial epoxy powder-coated finish and open access front panel design.

This robust construction provides excellent resistance to weather exposure, dust, moisture, impacts and vandalism. Tamper-resistant mounting bars and fixings further enhance security, making the PT104-4B ideal for exposed locations where dependable operation is essential.

Built to withstand years of continuous service, the telephone delivers reliable performance in factories, transport infrastructure, utility facilities, marine environments, construction projects and other demanding applications.

Four Push-to-Call Operation

The PT104-4B provides straightforward operation through four vandal-resistant stainless-steel call buttons. Users simply press the required button to automatically connect to one of four independently programmed telephone numbers without manual dialling.

The four-button design offers greater operational flexibility than single, dual and triple-button models, allowing organisations to provide direct access to multiple departments or support services from a single communication point.

Typical applications include Security, Customer Information, Control Room, Maintenance, Technical Support, Site Management, Emergency Assistance and other dedicated services.

This makes the telephone ideal for transport facilities, public help points, industrial communications systems and customer assistance locations where multiple contact options are required.

The GSM / 4G version supports push-to-call autodial functionality and can be configured remotely via SMS messaging for simple deployment and ongoing management.

GSM / 4G Mobile Connectivity

The PT104-4B GSM / 4G version operates independently of fixed telephone lines by connecting directly to GSM and 4G mobile networks using a Micro SIM card.

Supporting multiple LTE, WCDMA and GSM frequency bands, the telephone provides reliable communications across a wide range of mobile network operators, making it ideal for remote sites, temporary installations and locations without traditional telephony infrastructure.

Powered by an external 12V DC supply, the PT104-4B offers straightforward installation while eliminating the cost and complexity of analogue telephone lines or network cabling.

Configuration and programming are completed remotely via SMS messaging, allowing administrators to update settings without visiting site. The GSM / 4G version also supports remote status reporting, providing additional visibility of the telephone's operational condition.

Handsfree Two-Way Communication

Designed as a handsfree communication device, the PT104-4B provides high-quality two-way voice communication, enabling clear, natural conversations without requiring a handset.

The handsfree design improves reliability while reducing maintenance requirements in busy industrial, transport and public-access environments.

Open Access Weatherproof Design

The PT104-4B features an open access weatherproof design that provides immediate access to the call buttons without requiring a protective front door to be opened.

Designed to provide IP66-rated protection against dust, moisture and water ingress, the telephone is suitable for year-round deployment in exposed industrial, transport and public-access environments.

Its corrosion-resistant housing and sealed construction protect internal components from harsh environmental conditions whilst maintaining reliable communications in demanding locations.

Accessibility & User Safety Features

For applications where hearing aid compatibility is required, an inductive coupler can be fitted on request. This optional feature improves accessibility for users with hearing impairment whilst maintaining the telephone's 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 minimising maintenance requirements throughout the life of the installation.

Features

• Heavy-Duty GSM / 4G Push-to-Call 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 High-Quality Two-Way Voice Communication
• GSM / 4G Mobile Network Connectivity
• Micro SIM Card Operation
• Remote SMS Programming
• Remote Status Reporting
• Supports LTE, WCDMA and GSM Networks
• External 12V DC Power Supply
• IP66 Weatherproof Protection
• Corrosion-Resistant Die-Cast Aluminium Housing
• Industrial Epoxy Powder-Coated Finish
• Vandal-Resistant Construction
• Tamper-Resistant Mounting Bars and Fixings
• Non-Volatile Memory
• Optional Dry Contact Relays (Available on Request)
• Optional Inductive Coupler for Hearing Aid Compatibility (Available on Request – Additional Charge Applies)
• Operating Temperature from -30°C to +65°C
• MTBF Exceeding 50,000 Hours
• CE, FCC and RoHS Compliant

Specifications

Connectivity

• GSM / 4G Network Operation
• Supports Micro SIM Card
• Push-to-Call Autodial Function
• SMS Remote Programming
• Remote Status Reporting
• Supported Network Bands
• 4G LTE FDD - B1 / B3 / B5 / B7 / B8 / B20
• LTE TDD - B38 / B40 / B41
• WCDMA - B1 / B5 / B8
• GSM - B3 / B8

Audio Features

• Handsfree Full Duplex Voice Communication
• High-Quality Two-Way Audio
• Approx. 90 dBA Ringing Volume at 1 Metre

Construction

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

Protection Features

• IP66 Weatherproof Protection
• Conforms to EN60529
• Vandal-Resistant Design

Accessibility

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

Environmental

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

Power

• 12V DC Power Supply
• Input Voltage: 7.4V–12V DC
• Power Consumption - Idle Current: 75mA, Off-Hook Current - 160mA

Compliance

• CE Certified
• FCC Compliant
• RoHS Compliant

Dimensions & Weight

• Dimensions - 204 × 334 × 74mm
• Gross Weight - 6kg

Package Contents

• Project Telecom PT104-4B GSM / 4G Push-to-Call Outdoor Phone (Yellow)
• Tamper-Resistant Mounting Hardware
• User Documentation