NEWCO Lock Sensor is a Bluetooth 4.0 Low Energy (LE) powerful App that let your iPhone 4S or later become a smart proximity sensor tool.
When you purchased our Bluetooth LE device, NEWCO lock sensor, your valuable items tagged with this lock will be alert by your iPhone to remind you once the items left behind within a short range. The lock also has a function to locate your iPhone when you press a button.
Visit http://www.national.com.hk for detail.