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ST24 miniature PIR motion sensor with wired detector ball and control unit
ST24 motion sensor control unit and wired detector ball on a white background
ST24 PIR sensor module with separate round detector ball
    ST24 miniature PIR motion sensor with wired detector ball and control unit
    ST24 motion sensor control unit and wired detector ball on a white background
    ST24 PIR sensor module with separate round detector ball
ST24 miniature PIR motion sensor with wired detector ball and control unit
ST24 motion sensor control unit and wired detector ball on a white background
ST24 PIR sensor module with separate round detector ball
ST24 miniature PIR motion sensor with wired detector ball and control unit
ST24 motion sensor control unit and wired detector ball on a white background
ST24 PIR sensor module with separate round detector ball
    ST24 miniature PIR motion sensor with wired detector ball and control unit
    ST24 motion sensor control unit and wired detector ball on a white background
    ST24 PIR sensor module with separate round detector ball
ST24 miniature PIR motion sensor with wired detector ball and control unit
ST24 motion sensor control unit and wired detector ball on a white background
ST24 PIR sensor module with separate round detector ball
Specifications & Features

Add smart, automatic control to your indoor lighting with this compact PIR motion sensor. It’s ideal for areas like stairways and passages, switching lights on when movement is detected to improve safety and help avoid lights being left on unnecessarily in homes or small commercial spaces.

The ST24 makes sense for homeowners wanting hands-free light on a stair landing, and for an electrician or small business owner automating a corridor. Set the timer and light threshold to suit the space, and match the lamp type to the correct load rating before installation. For other sizes and styles, browse our motion sensors.

 

Specifications

  • Load rating: 800W incandescent; 200W low-voltage or fluorescent lamps
  • Supply voltage: 220–240V AC
  • Detection: 360°
  • Time setting: 5 seconds–8 minutes
  • Ambient-light threshold: 10–2,000 lux
  • Detector ball: 35mm diameter
  • Ceiling cut-out: 33mm diameter
  • IP rating: IP20, indoor use
Installation Guidance, Tips & Tricks

Choose an indoor position: The ST24 is IP20 rated. Position its detector to cover the area where movement should trigger the connected lights.

 

Check the circuit and lamps: Use a 220–240V AC supply and stay within 800W for incandescent lamps or 200W for low-voltage or fluorescent lamps.

 

Allow for the sensor dimensions: Provide a 33mm ceiling cut-out for the 35mm detector ball.

 

Set the controls: Adjust the time delay from 5 seconds to 8 minutes and the ambient-light threshold from 10 to 2,000 lux.

 

Test after installation: Have mains wiring completed safely, then walk through the detection area to confirm operation.

Frequently asked questions

What supply voltage does the ST24 use?

It is specified for 220–240V AC.

 

What load can it control?

The maximum is 800W for incandescent lamps, or 200W for low-voltage or fluorescent lamps.

 

What are the sensor dimensions?

The detector ball is 35mm in diameter and the ceiling cut-out is 33mm.

 

Can the timer and light threshold be adjusted?

Yes. The timer range is 5 seconds to 8 minutes, and the ambient-light threshold is 10–2,000 lux.

 

Can it be used outdoors?

No. The ST24 is IP20 rated for indoor use.

Specifications & Features

Add smart, automatic control to your indoor lighting with this compact PIR motion sensor. It’s ideal for areas like stairways and passages, switching lights on when movement is detected to improve safety and help avoid lights being left on unnecessarily in homes or small commercial spaces.

The ST24 makes sense for homeowners wanting hands-free light on a stair landing, and for an electrician or small business owner automating a corridor. Set the timer and light threshold to suit the space, and match the lamp type to the correct load rating before installation. For other sizes and styles, browse our motion sensors.

 

Specifications

  • Load rating: 800W incandescent; 200W low-voltage or fluorescent lamps
  • Supply voltage: 220–240V AC
  • Detection: 360°
  • Time setting: 5 seconds–8 minutes
  • Ambient-light threshold: 10–2,000 lux
  • Detector ball: 35mm diameter
  • Ceiling cut-out: 33mm diameter
  • IP rating: IP20, indoor use

1 Sold This Month

Miniature Passive Infra-Red Motion Sensor

5.0

SKU: ST24
R 237.00
R 237.00
R 339.00
Add smart, automatic control to your indoor lighting with this compact PIR motion sensor. It’s ideal for areas like stairways and passages, switching lights on when movement is detected to improve safety and help avoid lights being left on unnecessarily in homes or small commercial spaces.
Secure payment options
Stair Landing Lighting
Use the PIR sensor to switch suitable lights on when someone moves through an indoor stair landing.
Hallway and Passage Control
Add automatic switching in an indoor passage where people regularly move between rooms.
Small Commercial Corridors
Use in a compact office or shop corridor where movement-based lighting control is useful.
Settable Timer and Light Threshold
Adjust the timer from 5 seconds to 8 minutes and the ambient-light threshold from 10 to 2,000 lux.

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