AS304Tx Auto Switching Function Alarm time Adjustment: 3~25 sec channel Alarm in/out   AS304LAx Auto Switching Function Alarm time Adjustment: 3~25 sec channel Alarm in/out   AS308Tx Auto Switching Function Alarm time Adjustment: 3~25 sec channel Alarm in/out   AS308LAx Auto Switching Function Alarm time Adjustment: 3~25 sec channel Alarm in/out