Motion + Photocell Trigger 13A Switch Socket
Motion + Photocell Trigger Extension Socket 1G
The following is an example of the motion sensor usage for an electrical socket outlet.
The light connected to the socket will turn on when movement is detected.
The motion sensor is connected via a very long cable, allowing the sensor to be extended up to 3 meters.
Using a relay instead of directly connecting to motion sensor allows up to 10A of current draw
Relay Being Used
Normally Motion Sensor that are designed for lighting use only have a much smaller current rating as lighting equipment draws very low amperage.
Hence, an external relay is added in to the circuit for high amperage devices. The incoming current will flow through the relay with the sensor only acting as a mean to activate the relay contact.
Diagram
From the 13A plug top, incoming power is providing power to the sensor and the relay. Socket power is never directly connected to the motion sensor but instead is managed by the relay.
The Purpose of Relay
An additional relay is added into the circuit to allow the socket to support high amp devices such as fans.
The sensor can also be used with devices such as horns. For example, when a movement is detected Ie, a person walking by, the sensor will trigger the horn.
PIR Motion Sensor
Motion Sensor
A motion sensor will trigger when some motion is detected by the receiver. For example when someone were to walk pass a sensor, their movement will be detected by the sensor.
Most of the time motion sensors are use within an alarm system. Whenever the alarm is armed, any motion detected by the sensor will trigger the alarm. The sensor can also be used in a lighting circuit to turn on the light when a person enters the room in which the sensor is installed.
The sensor can also be installed with an electrical socket which can be used to plug in any appliances that requires the sensor. For example, a standing fan, so the fan will only turn on when a person walks into the room.
Direct Socket
This is how a normal light switch works. The lights turns on when the socket is switched on. Thus providing direct power to the light bulb.
PIR Motion Sensor
Some PIR sensor allows you to adjust the settings in which the sensor will work. For example, changing the duration of the sensor working or the lighting condition, as seen below.
In this preset, the sensor will only work in low lighting condition. the box is used to simulate low lighting condition.
In this preset this sensor can work in any lighting condition.
Timer
When motion activated the lights, There is a duration allowed which the light stays on for. The duration is according to the preset, In this case, the timer is set to 5 minutes.
The sensor is set to 5 minutes mode; the light will stay on for 5 minutes.
A timer is place next to the light to indicate the duration of the light turn on.
The Motion Sensor
With a motion sensor, movement in front of the sensor will cause it to trigger the light to turn on. However this sensor is also equipped with a light proximity sensor which allows it to detect whether its dark or bright.
Figure Show the setting available for the light duration and the lighting condition.
This motion sensor allows the user to adjust the setting.
The following are the settings available:
On duration: which controls the duration of the light turning on.
-15S ( The light stays on for 15 seconds)
-45S (The light stays on for 45 seconds)
-5 Minutes (The light stays on for 5 minutes)
Light Condition: The lighting condition in which the sensor will work.
-Deepdark (The sensor will only work in very low lighting condition)
-Lightdark (The sensor will only work in a dimly lighted condition)
-Allday (The sensor will work regardless of the lighting condition)
15 Seconds Mode
If only short period is needed, the lights can turn on for 15 seconds when set to 15Sec.
Allday Mode
If motion is required even during daytime, Using ‘Allday’ preset, the sensor is able to sense Motion regardless if the lighting condition.
