The Netbell-NTG-A100 is an upgraded model of the Netbell-NTG tone generator with a dual-channel 100W @ 4 ohms power amplifier in a NEMA-rated enclosure — delivering a complete, self-contained audio alert system for schools, factories, warehouses, and industrial facilities. Built on a TCP/IP platform with a built-in web server, it requires no additional software or dedicated hardware. Everything needed to manage tones, pre-recorded messages, and event schedules is accessible directly from any web browser.
Select from the device below to build a custom bell system that can meet your specific requirements.
Netbell-NTG-A100 (01-910-00054): The Netbell-NTG-A100 combines a Netbell-NTG tone generator with a dual-channel 100W @ 4 ohms power amplifier in a NEMA-rated enclosure — delivering a complete, self-contained audio alert system for schools, factories, warehouses, and industrial facilities. When connecting 8 ohm speakers to the Netbell-NTG-A100, you can connect up to 4 8Ohm speakers in series (2 speakers on each channelo)
8 Ohm 30W Horn Speaker (01-850-00141): This 30W horn loudspeaker offering intelligible voice reproduction and versatile positioning for paging in work sites, schools, parking lots, warehouses, and more. When connected to an 8-Ohm amplifier, it delivers a 30W output, a sound pressure level of 125 dB, and a frequency response of 225 Hz to 14 kHz.
8 Ohm 25W Horn Speaker (01-850-00111): This is a cost-effective horn speaker that can be used in factory and warehouse. Common 8 ohm impedance is easy to integrate into existing systems, and high power output means it will be easily heard where you need it most.
Emergency Push Button Set (01-910-00133): This push button switch is a great tool for you to manually activate up to 4 emergency messages. This four color-coded push buttons (red, blue, yellow, and green) can be configured for emergency code like this:
- Red: Fire/Flood
- Blue: Tornado
- Yellow: Active Shooter
- Green: Evacuation
4-Button Key Fob for Emergency and Pre-recorded Message Activation (01-850-00066): This wireless key fob is a convenient way to instantly activate any of 4 pre-recorded messages — emergency alerts, safety announcements, shift changes, or custom messages — from anywhere in your facility. The RF signal travels through walls, floors, and doors with a range of up to 50M (164FT) in open areas. Each set includes a receiver that installs inside the Netbell controller and 2 key fobs; up to 20 key fobs can be paired to a single receiver. This can be used as a stand-alone remote or alongside the Network Push Button Set for added flexibility.
Example message configuration:
- A: Fire/Flood
- B: Tornado
- C: Active Shooter
- D: Evacuation
