UTC Fire & Security B.V. AA2 用户手册

Figure 12 shows the radar detection pattern.

You can adjust the radar range from 3 to 15 ft. (0.9 to 4.57 m). To 
adjust the range, rotate the range adjustment control (Figure 13) 
to the desired position. The radar range is not affected by the 
PCB rotation during PIR range adjustment. The radar range can 
be set to just above the floor, to prevent door activation from 
objects that have been slipped under the door. After adjusting the 
radar range, carefully test to be sure undesired sources of motion 
will not be detected.

By connecting the lock relay in series with the door lock and the 
monitor relay in parallel to the door switch and alarm circuit, the 
sensor will allow normal egress and will monitor alarms from the 
door being held or forced open. The sensor will monitor the opera-
tion of the door switch without affecting the access control system.
When the sensor detects motion, the lock relay contacts open, 
unlocking the door, and the monitor relay contacts close, 
preventing an alarm from being sent to the access control system 
for a fixed time. The time is selected with the DIP switch from 1/
2 to 64 seconds or until reset by the sensor. See 

If the sensor does not detect the opening of the door switch within 10 
seconds of sensor activation, the lock and monitor relays will return 
to their normal condition. If the relay timer is set to 8 seconds or 
shorter, the lock relay will change back to the normal condition 
when the relay timer times out. After the door switch opens and 
closes, the sensor will automatically cancel any remaining relay time 
if the door switch remains closed for at least 2 seconds.
The sensor’s sounder will produce a continuous tone to warn of an 
open door 15 seconds before the timer closes the lock relay 
contacts and opens the monitor relay contacts. Closing the door 
will silence the sounder. New movement within the detection area 
will restart the timer and reset the sounder. If the door is still open 
when the timer ends, the monitor relay contacts will open, which 
will cause an alarm signal to be sent to the access control system.

The lock relay operates in the fail safe mode (factory default) 
when the lock relay state during alarm is the same state as when 
the unit is not powered. During the power up period, the relay 
will be in the same state as during normal unalarmed operation.
The lock relay operates in the fail secure mode where the lock 
relay state during normal unalarmed operation is the same as 
when the unit is not powered. During the power up period, the 
relay will be in the same state as during the alarm period. 

The fail secure mode must be authorized by your local 
authority. Listed panic hardware shall be used to allow 
emergency exit from the protected area.

Figure 14 shows the fail safe and fail secure modes relay contacts.