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contact>>date：2017-10-24 09:45
Adjustable delay-off time from 10 seconds to 15 minutes;
Ambient light override. Automatically measures the ambient light level and there is no trigger on above a light level adjustable by users;
Good for 12V DC loads;
ABS-V0 flame resistance material; and
Classical 86 series design and high quality build.
BRT-319 occupancy sensor switch is powered by 12V DC supply:
In+: Coming from the positive of power supply;
In-: Coming from the negative of power supply; and
Load wire: Going to the load.
Fig.3 BRT-319 Wiring Diagram
Warning: Please make sure power is turned off before starting installation!
Fig. 3 shows the wiring diagram and Fig. 4 shows the step-by-step installation instructions. There are three easy steps::
Step one: Use a screwdriver to pry off the front plate in position A;
Step two: Wiring according to the diagram and the labelled ports of the switch; and
Step three: Install screws and front plate.
Fig.4 BRT-319 Installation Guide
Cautions:
Avoid mounting the sensor switch close to air vents as the vibration and air flow can reduce the effectiveness of the sensor switch;
BRT-319 PIR sensor switch needs a warm-up time about two minutes before it can operate properly. It has a precision tuning screw to adjust the ambient light override threshold as shown in Fib. 5 and another precision tuning screw to adjust the delay off time as shown in Fib. 6.
1. Adjust the ambient light override threshold
Please refer to Fig. 5. 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
b.Clockwise to “-”: decrease the threshold so that the PIR triggers will not be overridden in dark lighting condition.
Fig.5 Adjustment of Ambient Light Override Threshold
2.Adjust the delay-off time
There is another tuning screw on another side of BRT-315 PIR sensor switch. Use a screw driver to tune this screw to adjust the delay-off time as shown in Fig. 7. The delay-off time can be set from 10s to 15 minutes.
Caution:he tuning screw can not make a full turn. To avoid possible damage to the screw please do not use strong force to tune it.
Fig.7 Adjustment of Delay-off Time