Most connected-home system use a variety of sensors to monitor your home. One can tell if doors and windows are open or closed, but you'll need a different sensor to determine the status of your overhead garage door. Need protection from water damage? You'll need a moisture sensor for that. Want to know if someone's walking around your home when it should be unoccupied? Get a motion sensor. Would you like to be notified if your carbon-monoxide or smoke alarm goes off when you're not home? You'll need yet another type of sensor for that task
This reliance on single-function sensors is one of the reasons connected-home systems cost so much. The guys at Notion think they have a better idea. They've incorporated eight types of sensors into one very small device that can detect motion, acceleration, moisture, light, proximity, and sound. You deploy the same sensor to determine the state of your doors and windows that you'd use to be informed of a leaky water pipe. Thanks to economies of scale, Notion plans to sell three of its sensors and the bridge needed to connect them to your Wi-Fi network for just $199.
Why this matters: I won't be able to render a final judgment on Notion until I get my hands on a kit and try it out, but the concept makes a lot of sense on paper. If Notion can tie into modern lighting controls — so its light sensor can send a message to turn on the outdoor lights when it's dark, and its motion sensor can turn on an indoor lamp when I enter a darkened room — it could significantly reduce the cost and complexity of building out a smart home.
Notion enjoyed a very successful Kickstarter campaign last year, raising more than $280,000 against a goal of $50,000, and today the founders announced the closing of a $2 million venture-capital round. The additional funding will be used to "help support their launch and expand their sales and marketing teams," according to a press release.
Notion sensors use a proprietary flavor of the ZigBee protocol to communicate with the Notion bridge, and the bridge relays data to your home router using Wi-Fi. The company plans to also develop a bridge with cellular connectivity, so you won't need to have broadband service to use the system. This would be a good option for a vacation home where you don't want to pay for Internet access month in, month out.
How the Notion system works
The sensors have a range of about 175 feet (with walls in between) or 300 feet if there's a clear line of sight. The smartphone app you use to manage the system will inform you if a sensor is out of range, and you can deploy multiple bridges if you have a large home (the bridges can relay data to each other, so you'd need only one bridge will cellular capabilities in any one home if you wanted that option). The sensors themselves can operate as a mesh network, but that feature is currently disabled because of its impact on battery life, according to Notion CEO Brett Jurgens.
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