iPuray BRT-320 User manual

Product Description of BRT-320 Page 1of 6
Shenzhen Asia Bright Industry co., Ltd., Building 10, Asia Industrial Park, Gangtou, Bantian, Shenzhen, China.
www.a-brt.com. [email protected].
© 2015 All rights reserved. Subject to change without notices.
Ceiling Mount PIR Occupancy Sensor Switch
(DC Power Supply)
Model #：BRT-320
Features:
BRT-320 is a ceiling mount occupancy sensor switch which utilizes passive infrared (PIR) sensor
to detect the heat (in the form of infrared energy) from people moving within a space. It can
determine when a space is occupied and turns on or turns off the loads automatically. It has an
advanced micro controller unit and uses a proprietary signal processing technique to avoid false
triggers.
Instant on and adjustable delay off time from 2 minutes to 60 minutes;
Ambient light override. Automatically measures the ambient light level, and there is no
trigger on when it is above a light level which can be set by the user;
Easy installation onto the ceiling with or without a holder;
Good for 24V DC loads;
ABS-V0 flame resistance material; and
High quality build.
Fig. 1 and Fig. 2 show the front view and the back view of the BRT-320 PIR occupancy sensor
switch respectively.
Fig. 1 Front View Fig. 2 Back View

Product Description of BRT-320 Page 2of 6
Shenzhen Asia Bright Industry co., Ltd., Building 10, Asia Industrial Park, Gangtou, Bantian, Shenzhen, China.
www.a-brt.com. [email protected].
© 2015 All rights reserved. Subject to change without notices.
Specification Parameters:
Input Voltage
24VDC
Operation
Environment
No-condensation 20-90% RH，
-20℃～40℃
Wattage
200W
Working
Range
5m to 7m in diameter when
mounted at a height of 2.4m
Mounting Hole
Diameter
68mm
Dimension
(max)
Oval faceplate: 105mm
Circular faceplate: 77mm
Weight
115g
Wiring Diagram:
BRT-320 occupancy sensor switch is powered by 24V DC supply:
In+: Coming from the positive of power supply;
In-: Coming from the negative of power supply; and
Load wires: Going to the load.
Fig. 3 BRT-320 Wiring Diagram
Fig. 3 shows the wiring diagram. Wiring must be done according to the diagram and the labelled
ports of the switch.
Installation Guide:
There are two ways to install BRT-320 PIR sensor switches to the ceiling. Fig. 4 and Fig. 5 show
the step-by-step installation instructions, respectively.
Cautions:
Avoid mounting the sensor switch close to air vents, as the vibration and air flow can reduce the
effectiveness of the sensor switch;

Product Description of BRT-320 Page 3of 6
Shenzhen Asia Bright Industry co., Ltd., Building 10, Asia Industrial Park, Gangtou, Bantian, Shenzhen, China.
www.a-brt.com. [email protected].
© 2015 All rights reserved. Subject to change without notices.
1. Installation using a holder
As shown in Fig. 4, a holder is attached to the ceiling using screws first. Then, the PIR sensor
switch can be easily snapped into the holder.
The holder is specially designed for BRT-320 sensor switch. Please talk to our sales representative
when placing orders.
Fig. 4 Installation with a Holder
2. Installation without a holder
As shown in Fig. 5, without a holder, an opening in the ceiling needs to be made first. There are
four steps:
Step one: Open a hole of 68mm in diameter in the ceiling;
(Attach the electrical wires as shown in the Wiring Diagram Fig. 3).
Step two: Open the two flexible clamps on the side surface of the sensor switch;
Step three: Insert the sensor switch into the hole; and
Step four: The clamps will hold the sensor switch onto the ceiling tight and steady.

Product Description of BRT-320 Page 4of 6
Shenzhen Asia Bright Industry co., Ltd., Building 10, Asia Industrial Park, Gangtou, Bantian, Shenzhen, China.
www.a-brt.com. [email protected].
© 2015 All rights reserved. Subject to change without notices.
Fig. 5 Installation without a Holder
Operation Guide:
BRT-320 PIR sensor switch needs a warm-up time about two minutes before it can operate
properly. It has dip switches to adjust the delay off time, and has a precision tuning screw to adjust
the ambient light override threshold, as shown in Fib. 6.
Fig. 6 Dip Switches and Fine Tuning Screw

Product Description of BRT-320 Page 5of 6
Shenzhen Asia Bright Industry co., Ltd., Building 10, Asia Industrial Park, Gangtou, Bantian, Shenzhen, China.
www.a-brt.com. [email protected].
© 2015 All rights reserved. Subject to change without notices.
As shown in Fig. 7, please rotate the front cover counter-clockwise to remove it so that the dip
switches and the fine tuning screw are exposed.
Fig. 7 Removing the Front Cover
1. Adjust the delay off time
The 4 dip switches are used to set the delay off time to 8 settings based on different combinations.
Fig. 8 shows all the dip switches are in “off” positions. Each combination corresponds to a delay
off setting.
0000 delay off time = 2 minutes
1000 delay off time = 5 minutes
0100 delay off time = 10 minutes
1100 delay off time = 20 minutes
0010 delay off time = 30 minutes
1010 delay off time = 40 minutes
0110 delay off time = 50 minutes
1110 delay off time = 60 minutes
0 = off and 1 = on
(Other factory settings are available. Please talk to our sales representatives).
2. Adjust the ambient light override threshold
The fine tuning screw is used to set the ambient light override threshold. Use a screw driver to
tune the screw gently.
Caution: The tuning screw can not make a full turn. To avoid possible damage to the screw,
please do not use strong force to tune it.
a. Counter-clockwise to “+”: increase the threshold, so that the PIR triggers will be
overridden in bright lighting condition; and
Fig. 8 Dip Switches in 0000 Positions

Product Description of BRT-320 Page 6of 6
Shenzhen Asia Bright Industry co., Ltd., Building 10, Asia Industrial Park, Gangtou, Bantian, Shenzhen, China.
www.a-brt.com. [email protected].
© 2015 All rights reserved. Subject to change without notices.
b. Clockwise to “-”: decrease the threshold, so that the PIR triggers will not be overridden
in dark lighting condition.
Applications:
BRT-320 ceiling mount PIR occupancy sensor can be used for automatically turning on and/or
turning off various loads such as lights, fans, appliances, or other kinds of electrical equipment.
BRT-320 PIR occupancy sensor switch is perfect for saving energy and bringing convenience and
safety to our daily life and work. It has wide applications at various locations such as stairwells,
corridors, washrooms, offices, conference rooms in homes, schools, laboratories, hospitals, offices,
etc., especially useful where AC power supply is not available.
How to Order:
Please contact us: Shenzhen Asia Bright Industry Co., Ltd
Building 10, Asia Industrial Park, Gangtou, Bantian, Shenzhen, China
Tel: [phone] [phone]
Fax: [phone] [phone]
Email: [e-mail] Website: www.a-brt.com