Ungefähr SmartBot
A smart light switch not only lets you turn the light on and off using the switch itself, but also works remotely via Bluetooth LE wireless networking, so you can control your lights using your smartphone or other mobile device. The switch should also know its current status — in other words, whether the bulb is on or off — and send a notification over Bluetooth to subscribed apps whenever the switch is toggled, so they can update their local status too.
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