About Bluetooth Low Energy. I know iPhone 4S, iPhone 5, iPad 3 with iOS 5.1 and above support BLE 4.0. And I read the sample code TemperatureSensor from Apple. My question is what is the requirement for the sensors? In another words, what kind of sensors can be connected in this application? Are all the devices which support BLE 4.0 can be connected in my iOS devices which support BLE 4.0?About Bluetooth Low Energy. I know iPhone 4S, i