Netbell-KL 01-910-00029

The Netbell KL is a loud 102dB bell, with a loud 24V bell. Ethernet connection, NTSP time synch. 500 programmable schedule memory.

Retail Price: $851.00
Our Price: $809.00
Netbell KL

Accessories & Supplies:

DetailsIDProduct NameDescriptionPriceAdd To Cart
Click 751 LED Digital ClockLinortek Digital Clock$378.00
Click 701 NetBell Inside Second BellNetBell #2 (and more) Inside Bell$198.00
Click 702 Netbell Second Bell for OutsideWeatherproof Outside Bell p/n 01-910-0043$925.00
Click 407 25' Insulated bell wire25' Insulated bell wire$14.95
Click 404 50' Insulated bell wire50' Insulated bell wire$29.50
Click 405 100' Insulated bell wire100' Insulated bell wire$34.50
Click 413 250' Insulated bell wire250' Insulated bell wire$79.00


Netbell-KL  Network controlled break bell

Web-based self-contained work-shift and break bell system with high volume bell for noisy and large industrial areas.  This is a premium quality bell, it is the loudest one available in this size and voltage.

P/N 01-910-00029

Internet controlled - across your network, or across the web.
Add more bells. Build different schedules for different times of the year
Add optional Temperature and Humidity sensor to check on conditions 
Read more, below.

Compact, self contained system.  Set it and forget-it.
  • High volume - 102db bell
  • Manual Bell button included
  • You can add two more bell to this, and run them from the same timer
  • Easily add the synchronized highly visible digital LED wall clock
  • Normally 20,000 sq ft coverage for each bell
  • Includes emergency alert or "panic" button
  • Fully automated web-based timed alert system
  • Signals shift changes and breaks in areas of high ambient noise levels
  • Can be heard over loud equipment
  • Built on a TCP/IP platform with built-in web server
  • -- Allows user to acces, control, and schedule the bell via Internet connection
  • Completely pre-wired and installed in a NEMA-rated box
  • No additional software or designated computer required
  • Import/export schedules from existing data in text format
  • Buillt-in rechargeable battery protects the program during power outages
  • Automatically corrects for daylight savings, leap year, power outages
  • Run it from any computer or any network, or via the internet
This is a complete wired web controller installed in a NEMA-rated box.
Plug-and play ready, technical support is in USA (this is Made In USA)
Programming is done through any standard web browser
Multi-building ready! Just add more, in each building or each location, you control them over the network, or over the internet. 

10M/100M RJ45 Internet interface with connection and activity LED's
Input Power:  24VAC
6" High Voume Bell, 24VAC 92dBa @10', 102dBa @ 1m
Enclosure: ABS, IP67/150mm x 150mm x 90mm (Mounting hardware supplied)
Accessories:  3 meter power cable, 3 meter RF485 network cable, 3 meter input cable
External bell output:  Dry contact, 1-Form-A relay 110/220V  10A
On board temperature sensor and input voltage sensor
Working temperature from 0 - 65C  (32 to 149F)

Storage Temperature from -40 to + 125 C
Humidity from 10% to 80% non-condensing
Supported Protocols:  HTTP/SMTP/SNTP

All this, plus you can set the duration of the ringing event, for each individual time.

Click to read about the Linix technology behind our netbell - article one

Click to read about the Linix technology behind our netbell - article two

This has been going on for years: 
People keep asking "How loud are your bells?"

Unfortunately, it's like describing a dinner at a restaurant. It depends on the environment.  Is it an empty room like a gymnasium?  Does it have lots of rooms, or lots of background noise like a woodworking shop?  Is this a warehouse with lots of rows of shelving and boxes of fabric?  Will this be outside?

Bells and buzzers all seem to max out at 102db.  102db is very loud.
110db is extremely loud.  Painfully loud.  Ear-ringing loud.

In our experience, installing 2 to 3 bells or buzzers is much more effective than just one.   Put one by the timer, then run wire out the another, half-way across the building, or 100'.  It won't be louder, it will just be more likely to be heard above all the background noise.

So, "yours truly" did some research recently (2016), this is interesting:
Using an Android phone decibel app, this is what we found:
**A bedroom at night in the country, windows closed:  28 - 32 db
**A bedroom at night in the city with the windows closed:  42- 46 db
**Office environment, people chattering:  62db

**American Airlines 737 inside just behind the wing,
    where you can see the engine: during takeoff  86db
**Same jet, landing with the reverse thrusters on:  88db  That ROAR you hear..
**Same jet, cruising for 3 hours, it's 82 to 86db.  That's partially why flying is tiring.
Shop buzzer's:  102db (Edwards & Linortek the ones we sell)  Other brands "hum" at 82 to 86.
Our bells test out at 98 to 103db depending on voltage   When you fly, put napkins in your ears, you will arrive much less "buzzed.

It seems that no one offers anything louder than 102db, unless it goes on a train, ocean liner, fire truck or fog horn.  In some cases loudspeakers are used on farms; we don't have them, but our equipment will ring them.  This is 110db, a train horn on an obnoxious person's pickup truck.  In a working environment, this would clearly cause accidents.

More bells or horns does not make it louder, it just makes it more pervasive - easier to hear through the machinery, across the rooms, over the land.

July 5, 2019 update
A Fire Station Siren is 106 decibals. Our bells and buzzers are typically 98 to 102.

               Optional configurations include a second bell and a large digital clock