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Add Bell Scheduling & Emergency Alerts to Any PA System Without Investing a New System

Netbell-NTG Tone Generator for PA System

Simple . Affordable . Scalable . More

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Trusted by schools, factories, and offices worldwide to improve safety, efficiency, and communication

Add Smart Scheduling Function to Your Existing PA System

For many organizations, the existing PA system might not come with a built-in tone generator or bell scheduling function. This means they can’t set break alerts, emergency notifications, or make regular announcements such as setup automated reminder. Installing a separate bell system can be a significant investment, especially for businesses with extensive facilities or large areas to cover. However, if your current PA system has an available audio input, you can integrate the Netbell-NTG to generate and schedule tones/messages without the expense of adding an entirely separate bell system.

Introducing the Netbell-NTG – a network-enabled PA system controller with audio tone generator & bell scheduler that can be seamlessly integrated with your current infrastructure to add break bell and emergency notification functionalities to your existing PA system, providing you a new way for audio communications with your employees, saving you time and money.

The Netbell-NTG is built on TCP/IP platform with a built-in web server and specially designed hardware/software for audio tone/message generating and event scheduling. It comes with 40 built-in standard tones, user can add pre-recorded custom messages up to 10 hours if needed. The emergency alarms, custom voice messages and operation announcements can be activated via schedules, digital inputs, condition-triggered throughout the day for break time alerts, regular announcements, emergency notifications or automated reminders.

Key Features That Make Netbell® PA System Controller Stand Out

Simple DIY Installation

Install it yourself with just a screwdriver, setup in minutes - no expensive contractors needed.

Web-Based Bell Scheduler

Program & Manage your bell schedules from any web browser with custom tones and messages

Emergency Alert Ready

Activate pre-recorded alert message with a push button switch or 3rd party system with RESTful API

Seamless Integration

Integrate directly with fire sprinkler system, security systems using digital inputs or RESTful API to trigger immediate pre-recorded emergency messages.

Comprehensive Audio Options

40 built-in standard tones, 4 custom emergency messages which include hazmat material warning, active shooter, evacuations, user can add pre-recorded custom messages up to 10 hours if needed.

"Install and Forget" Reliability

And Linortek`s support team is standing by, eager to help when you need assistance

How the Tone Generator for PA Systems Works

The Netbell-NTG PA system controller seamlessly integrates with your existing PA system to deliver automated announcements with minimal setup:

Step 1: Connect to Your PA System

Connect the Netbell-NTG’s Line Out directly to an available audio input on your PA system for crystal-clear audio transmission.

Step 2: Network Integration

Simply connect the Netbell-NTG to your network via Ethernet. The device automatically obtains an IP address from your router—just enter this IP address in any web browser to access the control interface.

Step 3: Create Custom Schedules

Using the intuitive web interface, easily program announcement schedules that match your specific needs. Set up recurring events, special occasions, or one-time announcements with just a few clicks.

Step 4: Enjoy Automated Operation

Once configured, the Netbell-NTG operates autonomously according to your programmed schedule, ensuring reliable and consistent announcements without manual intervention.

Netbell-NTG Multifunction PA System

The Netbell-NTG PA system controller family now has various speaker systems for different applications. If you are looking for a multifunction PA system that delivers live, scheduled, or condition-triggered announcements, the Netbell Multifunctional PA System is a great option. You can use this system for break time alarms, background music, live announcements, emergency alarms and more.

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What Our Customers Say

Don’t just take our word for it – hear from the engineers and facility managers who rely on our controllers every day.

"As a growing school, our existing solution was no longer capable of meeting our needs. I needed to find a solution that was quickly installed without making any significant infrastructure changes. Netbell is very easy to set up and operate, plugs right into our network and we can set different schedules for each school from a simple web interface, it provides both temporary and long-term solution for future expansion."

This is a great product. easy to install and use. We have been using these for over 8 years. They have worked with no problems.

Excellent product. Once you finish writing your schedules just click on save as and it’s done. This server can be accessed anywhere in your assigned network from any station. It is password protected and easy to find with the discover command that’s downloaded from the Linortek website. The instructions are included and the company has an excellent technical support team that are very courteous and walk you through any issues. I’m very happy with the servers and plan to buy more of them.

The Netbell-NTG controller allowed us to automate all our shift announcements across 5 different departments. Installation was simple, and programming the schedule took less than an hour. Our operations are now more efficient, and our supervisors can focus on more important tasks.

We installed the Netbell-NTG in our school last year, and it's been a game-changer. We can schedule different bell patterns for regular days, half days, and special events. The remote management feature is particularly useful during unexpected schedule change.

Explore the Complete Netbell Family

Find the Perfect Solution for Your Unique Needs

Every facility has different requirements. That’s why we’ve developed a comprehensive range of Netbell products to match any application:

Simple Timer Replacement – Upgrade from mechanical timers with our bell controllers
Break Bell System – Ideal for upgrading or replacing existing school & factory break bell systems in areas with medium or loud noise levels
Industrial PA System – Perfect when you need a system that delivers live, scheduled, or condition-triggered announcements, emergency alerts, and public address messaging
Break Buzzer System – Designed for high ambient noise environments, covering up to 25,000 square feet of industrial working area

The Linortek advantage: intuitive web interface, precision timing, and true plug & play installation. Your fully automated IP-based alert system will be up and running in minutes, not days.

The Linortek Support Promise

At Linortek, customer satisfaction is our top priority. Our support team is consistently praised for their knowledge, responsiveness, and willingness to go the extra mile.

Our commitment to you:

√ Responsive communication

√ Expert product knowledge

√ Troubleshooting assistance

√ Installation guidance

√ Ongoing support for the life of your product

      
   Linortek
   13 Google reviews 
  Write a review 
  
 
 
   
 
 
       Posted on Google  
   
   marek konarkowski 
 
 
 
 Trustindex verifies that the original source of the review is Google. Maria is a GREAT technician and a person as well. Very knowledgeable and very helpful. Very patient too :)
Thank you Maria very much !
  
 
      Posted on Google  
   
   Technology Department 
 
 
 
 Trustindex verifies that the original source of the review is Google. System was great to install and gave us the precision timing for our bells needed to integrate the new time driven and time dependent sync, thanks for making such a great product.
  
 
      Posted on Google  
   
   Dale Gruber 
 
 
 
 Trustindex verifies that the original source of the review is Google. I purchased 3 Netbell systems for our manufacturing plant. First, the buzzers work great and have helped our breaks start and stop much more consistently. Even more, their customer support is INCREDIBLE. Maria is the best I've ever been helped with. She first helped me get everything wired and installed myself. About a year later, she helped me on the live chat on their website and she walked me through everything so well. Everyone dreads customer support. With this company and Maria, it is actually super helpful. You don't wait forever. You don't wait for responses. You are dealing with really brilliant and personable people. I'm just super impressed.
  
 
      Posted on Google  
   
   Bookkeeper Atchley 
 
 
 
 Trustindex verifies that the original source of the review is Google. We were in serious need of help and Maria was AMAZING!  HIGH recommendation!
  
 
      Posted on Google  
   
   eric sandlin 
 
 
 
 Trustindex verifies that the original source of the review is Google. Maria was so helpful. I had a connection problem and she help me for two days until we solved the issue. Thank you Maria!!!!
  
 
      Posted on Google  
   
   Steve M 
 
 
 
 Trustindex verifies that the original source of the review is Google. Cool product, but the service is the best part!  Maria is always willing and able to help, and responds very quickly (even on her day off!)  Thanks Maria!
  
 
      Posted on Google  
   
   arturo garcia 
 
 
 
 Trustindex verifies that the original source of the review is Google. I will make mine short. we had issues with trying to get connected to our network. Maria one of the support techs helped me out for about 4 hours trying to get it connected to our network. after exhausting all our options we found out that with our upgraded network we needed to get IT involved to let this device talk to network. now it is just a matter of getting all the timers dialed in and putting it in operation.
  
 
      Posted on Google  
   
   Jeremy McElroy 
 
 
 
 Trustindex verifies that the original source of the review is Google. The school I work for has been using a Linortek bell system for years and we just upgraded to a new bell/PA system combo. We're still in the process of installation but so far, they have been super helpful in answering all our questions and talking us through details, and I have been very happy with the quality of the new system in my initial testing.

Highly recommend!
  
 
      Posted on Google  
   
   Melora Chang 
 
 
 
 Trustindex verifies that the original source of the review is Google. Tatiana, Maria, and Liyu are fantastic to speak to. They made everything so easy and smooth. Such a great team of people to do business with (sales, it, and management). Their service is fantastic. Thank you!

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Linortek’s products are designed, manufactured, and supported in the USA, ensuring the highest standards of quality.