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contact>>date：2017-08-14 15:50
Adjustable working distance from 1m to 7m;
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;
Load power up to 2000W;
Good for all kinds of loads (resistive capacitive and inductive);
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-307 PIR occupancy sensor switch respectively.
BRT-380 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
Load wires: Going to the load.
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-380 PIR sensor switches to the ceiling. Fig. 4 and Fig. 5 show the step-by-step installation instructions respectively.
Warnings:
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.
Cautions:
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-380 sensor switch. Please talk to our sales representative when placing orders.
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-380 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 a precision tuning screw to adjust the ambient light override threshold and a precision tuning screw to adjust sensitivity (working distance) as shown in Fib. 6.
As shown in Fig. 7 please rotate the front cover counter-clockwise to remove it so that the dip switches and the fine tuning screws are exposed.
1. Adjust the delay off time
The 4 dip switches are used to set the delay off time to 8 settings ba
Fig. 8 shows all the dip switches are in “off” positions. Each combination corresponds to a delay off setting.
2. Adjust the ambient light override threshold
A fine tuning screw is used to set the ambient light override threshold (Please see Fig. 6). 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 screwplease 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.
3. Adjust the working distance
A fine tuning screw is used to adjust the working distance by changing sensitivity (Please see Fig.
6). In some applications lower sensitivity can help to avoid false triggers. 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 sensitivity so that the PIR can have longer working distance; and
b. Clockwise to “-”: decrease the sensitivity so that the PIR can have shorter working distance.
BRT-380 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.