Overview
The Netbell-KB-M2-C pairs an extra loud break buzzer system with a matching 4-inch digital clock and adds two external buzzer outputs for larger facilities. A single volume-adjustable 110 dBA buzzer covers up to 25,000 sq. ft., and with the extra outputs you can add more buzzers to cover even more ground. The clock plugs into the controller and syncs automatically from the Netbell, with digits readable up to 250 feet, and everything ships fully wired in a NEMA-rated box. Built on a TCP/IP platform with a built-in web server, it lets you schedule break times and shift changes from any browser — up to 500 events — with no additional software and no monthly fees, and you can wire a push switch for manual emergency signaling. A cost-effective warehouse buzzer system to replace an aging bell timer.
How It Works
- Wire your external buzzer to the power supply and connect it to the Netbell-KB-M2-C controller.
- Power the unit and connect it to your network — it can go anywhere on your network, no direct PC connection needed.
- Plug in the 4-inch digital clock — it syncs its time from the controller automatically, no setup.
- Add buzzer schedules from a standard web browser (or the free BellScheduler desktop app) — up to 500 events.
What’s in the Box
- One Netbell-KB-M2 SERVER
- One 3-meter power cable
- One 3-meter RJ45 network cable
- One 24VAC power supply
- One 4” digital clock
- Wall mounting brackets and hardware













