The IoT solution from Numerex and RTC enables remote, two-way communications between the school district’s central traffic office and an embedded electronic device in the flasher signal signs, company officials said. The flasher schedule is designed to be changed across the entire school district with one update. RTC integrated the Numerex secure cellular network, as well as its embedded cellular module, allowing each flasher panel to communicate wirelessly. School districts can also receive text or email alerts informing them when a bulb burns out or when the battery is failing.