The CS3x Series – Reliable Handsets for Critical Communication

 

The CS3x Series is a new generation of rugged handsets designed for organizations that need reliable communication in critical or threatening situations. In healthcare and social care, schools, correctional facilities, industrial sites, retail environments, and public sector settings, quick access to information can make a significant difference.

  • Personal safety

  • Rapid alarm handling

  • Clear voice communication

  • Integration with other systems and connectors through the COBS Messaging Server (CMS)

The CS3X Series

Why choose the CS3x Series for critical communication?


The CS3x Series is built for environments where reliability, personal safety, and quality are essential. The handsets are designed to support rapid alarm handling, clear voice communication, and integration with wider safety systems through COBS Messaging Server.

Straightforward migration trough software update

For organizations currently using the earlier C-31xx Series, migration is straightforward. Following a software update to the DECT base stations and server, the new handsets can operate in the updated environment. The series is developed with a strong focus on usability in stressful situations. Clear physical buttons, tactile feedback, and intuitive operation help staff act quickly when every second counts. The series includes CS33, CS35/CS35p, and CS37/CS37p. CS35p and CS37p support LF-positioning, enabling precise indoor locationing where GPS is limited or unavailable.

Webshop

Professional personal alarm handsets for high-risk environments

Critical situations vary from one environment to another. A violent incident in a school, an assault in psychiatric care, a robbery in retail, or an accident involving a lone worker in an industrial setting all place immediate demands on communication.

Unlike public mobile networks, which may suffer from poor coverage or become overloaded, the CS3x Series is designed for dependable on-site communication. Combined with COBS infrastructure, the series helps organizations respond faster and coordinate more effectively when every second matters.

 

 

Sectors

Upgrade to CS3x

The upgrade to CS3x supports stronger security, better everyday usability, and a longer product lifecycle through:

  • Stronger audio
  • Clearer display
  • Faster menu response
  • More ergonomic design for daily use
  • Longer battery life
  • Improved charging stability
  • More durable mechanics
  • Reduced service and repair needs
  • Higher cybersecurity
  • Stronger encryption
  • Continuous security updates

Key strengths

The series is a future-ready platform with a new hardware generation, extended lifecycle, continued software support, and long-term parts availability.

  • Clear physical buttons and tactile keypad for fast use under pressure
  • Advanced alarm handling and messaging capabilities
  • Integration with third-party systems through COBS CMS
  • Support for room-level locationing on selected models
  • Durable construction for demanding professional environments
  • Automatic alarm functions on selected models, including man-down-related features and pull-cord alarm

Critical communication handsets for schools and education

Schools and educational institutions need communication solutions that work under pressure. In a fire, lockdown, or violent incident, staff need dependable tools.

The CS3x Series supports quick internal communication and alarm handling through physical controls, clear displays, and dependable on-site communication. The physical buttons provide immediate feedback, and the system operates independently of public mobile networks.

Schools

The CS3x Series in correctional facilities

Correctional facilities and forensic psychiatry require especially high reliability. Staff needs to be able to raise the alarm immediately, and support often needs to be directed to a precise location.

In the event of an assault, escape attempt, or disturbance, supported models can trigger alarms manually or automatically. In higher-risk scenarios, this can be critical for protecting both staff and inmates.

 

Security

Alarm handsets for industry and lone workers

Industrial sites can involve falls, machinery incidents, toxic leaks, lone working, and limited visibility across large areas. In these environments, staff may not always be able to raise the alarm manually.

For these environments, CS37 and CS37p are particularly relevant because they support automatic alarms such as tilt, running, and no-movement alarms, along with personal alarm functionality and an optional pull-cord alarm. That makes them suitable for roles where a lone worker may not be able to raise the alarm manually.

Industry

Personal alarm handsets for logistics and warehousing

Warehouses and terminals are often large, noisy, and difficult to oversee. Staff may work alone in remote sections of a building where rapid assistance is harder to deliver.

Alarms can be connected to precise locationing and automatic no-movement functionality, helping organizations direct assistance to the right area without delay.

Handsets for critical communication in infrastructure, hospitality, and property

Airports, ports, hotels, offices, and larger properties all depend on fast internal coordination when an incident occurs.

The CS3x Series supports clear voice communication and alarm handling across these environments, helping staff act faster during incidents such as threats, technical faults, service disruptions, or personal safety situations.

Hospitality

Professional personal alarm handsets for healthcare and social care

In healthcare and social care, staff often work in environments where incidents escalate quickly. A service user may become aggressive, an in-patient may need urgent assistance, or a colleague may require immediate support in a restricted area.

The CS3x Series enables staff to raise an alarm and share location information quickly, helping colleagues respond faster and with better situational awareness. This improves both personal safety and continuity of care.

Social care

Comparison of CS33, CS35, and CS37 Handsets

CS33

Best suited for: Everyday professional communication

Key strengths: Clear voice, ease of use, basic messaging

Access Point locationing: No

Low-Frequency system for precise locationing: No

Automatic alarms: No

 

CS33

CS35 / CS35p

Best suited for: Environments that need stronger alarm handling and integration

Key strengths: Advanced alarm and message handling, COBS CMS integration, improved durability

Access Point locationing: Yes

LF-system for precise locationing: Yes, with the CS35p

Automatic alarms: No

 

CS35 CS35p

CS37 / CS37p

Best suited for: Higher-risk environments and lone working

Key strengths: Personal alarm, automatic alarms, and enhanced safety features

LF-system for precise locationing: Yes, with the CS37p

Automatic alarms: Yes

 

CS37 CS37p

Frequently asked questions about the CS3x Series

  • Which CS3x handsets replace the C-31xx models?

  •  

    • CS33 replaces C-3105i
    • CS35 replaces C-3110i
    • CS35p replaces C-3110i with Pos
    • CS37 replaces C-3115i
    • CS37p replaces C-3115i with Pos

  • What are automatic alarms?

  • Automatic alarms are alarms triggered by handset behaviour or sensor input rather than manual activation alone. In the CS37 range, this includes tilt, running, and no-movement alarms, which can help protect lone workers and other users.

     

  • What is a pull-cord alarm?

  • A pull-cord alarm is a safety function that can trigger the alarm if the pull-cord attachment is activated, for example if the handset is pulled away during an incident. 

  • What do IP54, IP65, and IP67 mean?

  • These are Ingress Protection (IP) ratings that show how well a handset is protected against dust and water.

    • IP54 indicates protection against dust and splashing water.
    • IP65 indicates dust-tight protection and resistance to water jets.
    • IP67 indicates dust-tight protection and resistance to temporary immersion in fresh water.

    Within the CS3x Series, CS33 is rated IP54, CS35 is rated IP65, and CS37 is rated IP67.

  • What are the benefits of physical buttons on professional DECT handsets?

  • Physical buttons provide immediate tactile feedback, which helps staff act quickly in stressful situations. This reduces uncertainty and supports faster alarm activation when time is critical.

  • How does the CS35 support integration?

  • The CS35 can be integrated through COBS CMS with wired or wireless alarm buttons, and third-party systems such as nurse call, building management, fire alarm, and PSIM systems. This helps strengthen mobility, alarm distribution, and response handling across the organization.

  • What accessories are available for the CS3x Series?

  • The series also includes accessories that support different deployment needs, such as multi-chargers, spare batteries, clips, holsters and pull-cord security accessories.

Help choosing the right CS3x handset

The right handset depends on the environment, risk profile, and operational requirements. Contact us and we will help identify the right CS3x handsets suitable to your needs; for alarm handling, communication, and personal safety.

Contact us