Handsfree车箱单元（BTM4402C2A)

Specification* Bluetooth V2.1+EDR criterion * Class 2 * External antenna * Accord with Bluetooth (Hands-free Profile1.5) * DSP realizes echo dispose, erase noise and echo etc. * Support cellphone book in-phase, realize cellphone book in-phase by multi mode, select mode automatically. * Support many types of coding format of the cellphone book contentGB2312UTF8UNICODE * Standard UART port Default: baud rate 9600bit/s,1 unit start bit,8 units data bit,1 unit stop bit,none parity bit * Analog sound port * Automatic Save power mode * Safe authentication, data encryption * Realize protocol LMLCL2capSDPRFCOMMOBEX Profile Bluetooth Headset Profile Bluetooth Hands-free Profile Bluetooth Obex Object Push Profile Bluetooth Synchronization Profile Bluetooth Serial Port Profile * support multifunctional phone operation dial phone sound dial reject answer ring off * speak incoming telephone number * support sound transmission, you can switch the calling in the state of hands-free to cellphone or cellphone to hands-free ( cellphone port need to support) * paired several cellphone in the same time * the function of sound automatically becaming mute during calling * Adjust function of the calling volume (volume-low to loud: 15 steps) * LED indicator light function * Mute function * Support Bluetooth cellphone 1.0 or 1.2 or 2.0 criterion * Work temperature rang-20+75 * Storage temperature range-40+85