A simple door contact triggers off a message to the central monitor whenever the door is opened. Williams sees all kinds of applications for this system. It could be on a bedroom door in a domestic environment, rigged up to some outside party when intruders break in. It could even check whether someone is hiding in a corridor or whether errant workers are smoking on a rooftop. Even before the new device rolled out of its factory, Rondish had received orders from its customers.
Innovation does sell, indeed.
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