Yunzi - The Smart Ibeacon Sensor Yunzi's technology makes it aware of its surroundings knowing the light intensity around it as well as sensing its own movement. Access this information by embedding our SDK into your app and create a truly magical experience for your users. Protocol: Bluetooth 4.0 with iBeacon certification System compatibility: iOS 7.0 or above;Android 4.3 or above Sensors: Accelerometer,Light sensor,Temperature sensor LED: 3 LED