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Feature* compatible with V 1.2 or 2.0 criterion * class 2 standard* internal antenna* effective distance 10M* standard UART interface * support multi-band rate* energy saving automatically* support low consume function mode* reference designs available at no additional cost * high-speed function model* security authentication, add code for data Realize agreement* Realize Bluetooth serial profile.* LM, LC, L2cap, SDP and RFCOMM Pin specification:1. clearup saved Bluetooth address(input) 2. connect instruction output high level under connection(output) 3. clearup transmission(input)4. request transmission(output)5. serial data input6. sleep/awaken(input),connect high level when it is free7. do not connect8. the source of power supply 9. the pressure of electrical source(input)