Fig. 1 and Fig. 2 show the front view and the back view of the BRT-309 PIR vacancy sensor switch respectively.

BRT-309 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 wire:                    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-309 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-309 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-309 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 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 are exposed.

  1.   Adjust the delay off time

  The 3 dip switches are used to set the delay-off time to 4 settings based on different combinations. Fig. 8 shows all the dip switches are in “off” positions. Each combination corresponds to a delay off setting.

  Please note that BRT-309 vacancy sensor switch is to be used together with a wall switch. The wall switch is used to manually turn on the BRT-309 sensor switch and the load first before it can automatically turn off the load later on.

BRT-309 ceiling mount PIR vacancy sensor can be used for automatically turning off various

  loads especially for high power 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.