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Md Jony Islam Author
Md Jony Islam
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Małgorzata Koperska, MD Steven Wooding
Last updated: August 12, 2025

Wiring Diagram of Motion Sensor for Light Control 2025

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Single phase Light

Single Phase LED Light

Energy-efficient LED light for single-phase supply

Single phase Light

Well Light Holder

Recessed light holder typically used in ceilings/walls

Motion Sensor

Motion Sensor

Device that detects movement using infrared or ultrasonic signals

[motion-sensor]
Single Phase DP MCB

Single Phase DP MCB

Double Pole Miniature Circuit Breaker for single-phase supply

Motion Sensor connection

Step-by-step wiring diagram of a motion sensor connected to a light circuit for automatic ON/OFF control based on detected movement.

floatless water level controller

Float less relay system is a method of automatic control of water pumps by measuring the level of water in electricity using probes and water level. Based on the presence of water, it switches through relay contacts to turn on or off the pump motor, permitting full automatic on/off control of the pump with no need of mechanical floats.

Formula & Table Summary:

Line (Live) Input: Supplies power to the sensor.
Neutral: Completes the electrical circuit.
Load Output: Connects to the light fixture.
Earth (Ground): For safety grounding.
Operation: Sensor relay closes load circuit upon detecting motion, turns off after delay.

TerminalConnectionFunction
L (Live)Connects to Line/Live supplyPowers sensor circuit
N (Neutral)Connects to Neutral wireCompletes power circuit
LoadConnects to light fixtureControls light ON/OFF
Earth (Ground)Connects to ground wireSafety protection

motion activated lighting wiring

The motion sensor wiring diagram shows the connection between a motion sensor switch and a lighting load to have the light switch ON when it detects any motion and switch OFF after a set delay. The usual connection comprises of line (live), neutral, load to the lighting device, and an earthing point to the earth. The motion sensor is a relay-based device where its internal relay operatively manages the load circuit in accordance to infrared detection. Such an arrangement is highly popular in security lighting, corridors and outdoor settings to save energy or convenience. Appropriate connections and right attachment of terminals give efficient usage and security.

motion sensor connection

Motion DetectedSensor RelayLight StatusRemarks
YesClosedONLight turns ON automatically
NoOpenOFFLight remains OFF

Frequently Asked Questions - Motion Sensor connection:

What wires are needed for a motion sensor?

Live, neutral, load, and earth wires are required.

Can motion sensors control outdoor lights?

Yes, with proper waterproof sensors.

How is the motion sensor connected to the light?

Load terminal of sensor connects to light's live input.

Do motion sensors require neutral wire?

Most modern sensors require neutral for power.

Can multiple lights be connected to one sensor?

Yes, if total load is within sensor's rating.

What is the typical delay time?

Usually adjustable from 10 seconds to several minutes.

Is earth connection mandatory?

Yes, for safety and compliance.

Can I install a motion sensor myself?

Only if you have basic electrical knowledge.

Will sensor detect pets?

Some sensors have pet immunity; check specifications.

What if the light stays ON constantly?

Check wiring and sensor sensitivity settings.

Md Jony Islam

Md Jony Islam

CalculatorToolsProject

Founder of Earthbondhon.com

a free online tools website designed to make everyday and engineering-related calculations easier for students, professionals, and hobbyists. The site offers a wide range of basic calculators across key categories, including Electrical Calculators, Electronic Calculators, and Time & Date Calculators.