Nest H17000EF Connect Range Extender for Nest Secure Alarm SystemUse the Nest Connect to maintain a strong connection for Nest Secure sensors that are placed far away from the system hub. It's a little added peace of mind if you live in a large home or vertically stacked townhouse. Connect keeps Nest guard & Nest detect connected when they're placed far apart, especially in larger homes Plugs into standard wall outlet It's a little added peace of mind if you live in a large home or vertically stacked townhouse