SENA Promi-SD 205 - Manual (Page 45)

Promi-SD User Manual – Appendix A. AT Commands A-9
Copyright © 2006 Sena Technologies, Inc. All rights reserved.
20 AT+BTKEY=$string

SD Response  OK
Purpose Change pin code
Parameters $string= New pin code (Default=”1234”)
Description Pin code is a string, which allows 16 alpha-numeric characters maximum. Based on this
pin code, Promi-SD generates a link key which is used in actual authentication process.
Reference AT+BTCSD, AT+BTFP, AT+BTSD?, AT+BTSEC, ATZ, AT&F
Example AT+BTKEY=”apple”
21 AT+BTSD? 
SD Response  112233445566
 OK
Purpose Display the list of Bluetooth devices sharing the pin code
Description Once a connection is made with pin code, Promi-SD saves the Bluetooth device with its
link key generated by pin code. The connection to a device listed in Promi-SD can be
made automatically without authentication process. The maximum number of the list
is 5.
Reference AT+BTCSD, AT+BTFP, AT+BTKEY, AT+BTSEC, ATZ, AT&F
22 AT+BTCSD 
SD Response  OK
Purpose Clear the list of Bluetooth devices sharing the pin code
Description This clears the list of Bluetooth devices with link key in flash memory. To take effect of this
command, ATZ or power off and on because the main memory still has the list.
Reference AT+BTFP, AT+BTKEY, AT+BTSD?, AT+BTSEC, ATZ, AT&F
23 AT+BTFP,n

SD Response  OK
Purpose Set generation of link key every time of connection
Parameters n=0: Inactivate (Default)
n=1: Activate
Description If n is set to 1, Promi-SD asks pin code every time of connection. This is used to level up
the security.
Reference AT+BTCSD, AT+BTKEY, AT+BTSD?, AT+BTSEC, ATD, ATZ, AT&F
24 AT+BTSEC,Authentication,Encryption

SD Response  OK
Purpose Set authentication and data encryption
Parameters Authentication=0: Inactivate (Default)
Authentication=1: Activate
Encryption=0: Inactivate (Default)
Encryption=1: Activate