AUDAC SMA Series - RS232 Serial Interface

SMA&SMQ - User manual 09
RS232 (serial connection interface):
For connection with home automation systems, or other remote control equipment
Connection Standard RS232
PIN 2 SMAQ TX
PIN 3 SMAQ RX
PIN 5 GND
Settings 19200 Baud
8 Bit
1 Stop bit
No parity
No Handshaking