Netbell-NTG Tone Generator
Tone Generator with Scheduling

Linortek Netbell-NTG Network All-In-One Multi-Tone/Message Generator/Controller for School Factory Industrial Public Address (PA) or Intercom System. In stock, fast shipping. 01-910-00059

Retail Price: $813.00
Our Price: $731.70
Tone Generator and Controller

Netbell-NTG Tone and Message Generator and scheduled controller

Combines two normally separate systems in to one:
    The tone generator and the scheduling timer.
Takes it a few steps further:
    Adds the ability to record your own personal messages.
    Synchronizes the time with the NTSP clocks on the internet - so it's spot-on accurate!
    You can run this locally, or extremely remotely - across the web.
Easy setup. 
You download the most updated program into the controller, then set up the times.

UPC: 01-910-00059

Includes two circuits, and the ability to run them separately.


Netbell Tone Generator

If you have a PA system in place and are looking for a device to generate and schedule different tones to signal different events, our tone generator is your perfect solution. The Netbell-NTG is a network enabled, all-in-one system that can be used to produce timed or manually triggered different sounds for different events through an existing PA system.

Built-in Web-Based Bell Controller/Multi-Tone Message Generator,:
Self-contained, ease of scheduling, remote access.  No addtional software or designated computer required.

Then Netbell-NTG Multi-Tones/Multi-Messages Generator is designed to send out scheduled audible alerts for an existing Public Address (PA) System for signaling start and stop work, lunch breaks, shift changes, general alarms, service notification in schools, factories, businesses, warehouses, industrial facilities, distribution centers, commercial buildings, and more.

Life-Time Free Support:
Linortek products are designed, engineered, manufactuered and supported by our team, located in Winston-Salem, North Carolina

Click here to download the Factory Brochure.  (But order from us!)

The Key Features

  • Network enabled program and schedule to play from a web browser or Bell Scheduler desk app over the network. No additional software or designated computer required
  • Two dry contact relay outputs built on the board that can be used to ring physical bells/buzzers or connect to ther electronic devices
  • 4 programmable digital inputs for triggering special events
  • Built-in one stereo audio line output (30ohm)
  • 40 standard tones/messages and the capacity of adding pre-recorded custom tones and/or voice messages up to 10 hours (voice messge file rate at 44.1K/16bit)
  • Plays audio from MicroSD card (1GB included)
  • Select/activate 16 tones/messages for different events
  • Up to 500 programmable weekday/calendar-based event schedules
  • Centralized programmable tone selection
  • Built-in phone jack for auto testing and setup
  • Master volume control
  • Built-in real time clock with user changeable NTP automtic internet time setting, automatic Daylight Savings Time and leap year correction
  • Flexible and accurate control of when the tones/messages are played: HH:MM:SS, MM/DD/YYYY, Sunday - Saturday
  • Built in rechargeable battery that can keep all settings for up to 7 days in the event of power outage
  • POE (Power over Etherenet) enabled
  • Designed, developed, and built in USA


  • Web Server: Built-In (All software located on built-in web server.)
  • Event Schedules: Up to 500 Event Schedules (Add schedules from webpage or desk app)
  • Tone/Message Play Duration: User Programmable for Each Event
  • Built-In Tones: 40 Standard Tones
  • Relay Outputs: 2 (Dry contact, 1 FORM C 48 Volt Max, 12VDC/5A, 24VAC/DC 3A)
  • Digital Inputs: 4 (Trigger special events)
  • Audio Output: 1 Stereo Line Output
  • Audio file format: Ogg Vorbis audio format
  • Audio file resolution: 16bit/8bit
  • Audio file rate: 44.1K/22K/11K/8K
  • File storage size: 1G
  • Enclosure: Polycarbonate, White Gray Body/Cover, 125X175X60MM
  • Accessories: 3M RJ45 Cable/3ft RCA Cable/3ft 3.5mm Audio Cable/3ft 4-Conductor Cable
  • Power Input: 12VDC(power supply included)
  • Voltage Sensor: On Board
  • Temperature Sensor: On Board
  • Rechargeable Battery: On Board (Built-in rechargeable battery for offline time & settings keeping backup)
  • Working Temperature: From 0 to +60 Celsius
  • Supported Protocols: HTTP/ SMTP/SNTP