PIR infrared Sensor Ceiling Switch for 2000W light auto on off function
BRT-306C 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.
l Instant on and adjustable delay off time from 10 seconds to 15 minutes;
l 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;
l Easy installation onto the ceiling with or without a holder;
l Load power up to 1200W;
l Good for all kinds of loads (resistive, capacitive, and inductive);
l ABS-V0 flame resistance material; and
l High quality build.
Front View and Back View:
Fig. 1 and Fig. 2 show the front view and the back view of the BRT-306 PIR occupancy sensor switch respectively.
BRT-306 PIR sensor switch requires both hot wire and neutral wire for installation:
Hot wire (ACL): Coming from the power line with 220V;
Neutral wire (ACN): Usually coming with the hot wire; and
Fig. 3 shows the wiring diagram. Wiring must be done according to the diagram and the labelled ports of the switch.
There are two ways to install BRT-306C PIR sensor switches to the ceiling. Fig. 4 and Fig. 5 show the step-by-step
installation instructions, respectively.
1.Please make sure power is turned off before starting installation!
2.Load shorting or using a load with a power rating higher than the specified wattage of the sensor switch is prohibited.
1. Avoid mounting the sensor switch close to air vents, as the vibration and air flow can reduce the effectiveness
of the sensor switch;
2. Avoid installing the sensor switch in an electrical circuit which has other frequent on/off switch or appliance,
as those on/off actions could cause false triggers.
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-306C sensor switch. Please talk to our sales representative when
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.
BRT-306C 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 delay-off time, and has a precision tuning screw to adjust the ambient light
override threshold, as shown in Fig. 6
As shown in Fig. 7, please rotate the front cover counter-clockwise to remove it so that the fine tuning screws
Caution: The tuning screws can not make a full turn. To avoid possible damage to the screw, please do not
use strong force to tune it.
1. Adjust the delay-off time
Please use the fine tuning screw marked I Fig. 6 to set the delay-off time. Use a screw driver to tune the screw gently.
a. Counter-clockwise to “+”: increase the delay-off time. The maximum available delay-off time is15 minutes.
b. Clockwise to “-”: decrease the delay-off time. The minimum available delay-off time is 10 seconds.
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.
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.
BRT-306C 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. They are perfect for saving
energy and bringing convenience and safety to our daily life and work. They have wide applications at various
locations such as stairwells, corridors, washrooms, offices,conference rooms in homes, schools, laboratories,
hospitals, offices, etc.
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