Blue and Red LED indicate the basis function status of Bluetooth Handsfree Car kit as following.
Bluetooth Handsfree Car Kit in idle status of disconnection: Blue LED will flash once every 5 seconds
Bluetooth Handsfree Car Kit is connection with mobile phone: Blue LED will flash once every half a seconds
Bluetooth Handsfree Car Kit has connected with mobile phone: blue LED will light UP.
Bluetooth Handsfree Car Kit is in the state of low electrical amperage: Red LED will flash once every 5 seconds...