手放免费车箱单元（BTM1004C2P)

Feature: * Embedded antenna or external antenna * Effective distance is 10M * Standard UART interface(default setting: baud rate 9600bit/s, 1 start bit, 8 data bit,1 stop bit, without parity check bit) * Support many kinds of baud rate(such as 9.6k,19.2k,38.4k,57.6k,115.2k etc),the maximum is 1.384Mbps * PCM simulate frequency interface * Energy saving automatically mode * Support low power working mode/ high speed working mode * Safe authentication data encryption * Realize agreement: LM,LC,L2cap,SDP,RFCOMM?realize Headset and Hands-free * Profile(Bluetooth Headset Profile And Bluetooth Hands-free Profile) * The Car kit hands-free can pair 3-7 mobiles * Acoustics keep silence automatically when talking Talk volume adjustment function( volume is divided into 15 steps) * LED indicator function * Support all the phones which are accord with Bluetooth criterion 1.0, 1.1 and 1.2 or 2.0 external main controller can realize the application of Hands-free by UART interface(UART_TX, UART_RX, UART_RTS, UART_CTS) * Work temperature range: -25 85 * Storage temperature range: -40 +85