Nordic BLE 4.0 nRF51822 Controller Chip Bluetooth Module Small Size 18.5 x 9.1x 2.0mm 5 Pack

Order sample from Amazon:   Memory：256KB flash + 16KB RAM memory Transparent transmission (Bridged method) easy to use and fast, no Bluetooth protocol stack development experience can use too. ；The user interface uses a standard UART (TTL) Interface, bidirectional data read, easy to operate；Supports serial AT commands, the user can modify the basic parameters like the serial port baud rate (default 9600bps), name, MAC address of the module, etc Serial data packet length, single data packet can support data length up to 200byte；； Serial hardware enable control, low-power control applications ； With the support under the test mode but not connect the serial mode, mutual communication between test module and bluetooth master devices Operating distance: 0~45m，class II level ； Support System: IOS & Android； Supply voltage：2.0～3.6V（3.3V typical）； Module comes with PCB antenna, optional external antenna；Size：18.5×9.1×2.0mmApplications:Electronic scalesElectronic cigaretteSmart cupsSmart braceletSmart WatchBluetooth toysIntelligent hardwareSmart HomePackage: BLE4.0 module X 5 pcs