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SNS Bell Scheduling

When bells are not synchronized with the clocks on the wall, confusion occurs and educational hours can be lost. Managing multiple school bell schedules doesn't have to be a cumbersome and complex process. SNS Bell Scheduling System allows you to easily control the bells in every corner of each one of your schools from any computer with access to your secure SNS Application Management Platform software.

Simply connect your bell or tone equipment to an SNS Network Bell Relay plugged into an Ethernet access point. Use the highly intuitive software interface to set up bell schedules for regular school days for each school in your district, special schedules for early dismissal or late start days, or even impromptu bells for fire or weather drills.

You can even schedule your bells for every day of the entire school year, using the built-in calendar functionality in the software. For last-minute bell changes and drills, simply access the secure software from any computer on your network to adjust the timing and communicate the new schedule to your bells.

Network Bell Relay Specifications


  • Dimensions: 4.13”H x 3.34”W x 2.83”D
  • Weight: 0.75 lb.

I/O Interfaces

  • 2 relay outputs (240 VAC 5A)
  • 4 digital inputs (0-12V), configurable pullups
  • 4 universal inputs (analog 0-5/10V or digital 0-12V) with configurable pullups
  • 4 digital outputs (open collector 24V 0.1A)

Serial Interface

  • 600-19200 Baud, 7/8 bit, Odd/Even/No par

Network Interface

  • RJ45 10/100 Mbit Ethernet (Autodetect)
  • TCP/IP, UDP, DHCP, Modbus/TCP, SNMP,
  • HTTP web server for control, status and configuration

Power Input

  • 12-24 VDC (+/- 20%)


  • FCC (A and B), CE (A and B)

SNS Bell Scheduler / Network Bell Relay Spec Sheet
Bell Scheduler
Part No.  Description
SNSBRL105 Network Bell Relay Switch
14486 M120v Mechanical Bell (Optional)