The IR Sensor (ST123) offers smart, contactless control of lighting—automatically switching on when a door opens, and off when it closes. Ideal for seamless, energy-efficient lighting in homes, offices, or hospitality areas.

Features

• 
  Short-distance infrared detection: activates at 5–6 cm
  
• 
  Supports LED lighting up to 200 W (incandescent up to 500 W)
  
• 
  Durable polycarbonate housing, IP20 rated
  
• 
  Designed for indoor use with a sturdy 1.5 m sensor cable
  
• 
  Wide operating temperature: –20 °C to +50 °C
  
• 
  Backed by a 5‑year warranty
  

Daily Uses

• 
  Banquet halls & meeting rooms: automatic lighting with door activity
  
• 
  Closets, cabinets, pantries: hands-free illumination
  
• 
  Washrooms and utility areas: light turns on when in use
  
• 
  Entryways and corridors: gesture-free control
  

How to Use & Install

Installation

1. 
   Shut off power before installation
   
2. 
   Mount sensor on the wall using included screws
   
3. 
   Connect sensor wiring to power and lighting load per diagram
   
4. 
   Power on and test operation
   

Operation

• 
  Opens door beyond ~5 cm → lights turn on
  
• 
  Closes back within 5 cm → lights switch off
  
• 
  Silver reflective sticker improves detection
  

Frequently Asked Questions

What’s the maximum lighting load?
Up to 200 W for LEDs, and 500 W for incandescent bulbs.

Does it work in cold/hot environments?
Yes—rated for –20 °C to +50 °C.

Is it easy to install?
Absolutely—requires minimal installation, following wiring diagram.

Any maintenance needed?
Keep the detection area clear and reflective sticker in place.

Why Choose ST123?

• 
  Smart activation via door movements for hands-free convenience
  
• 
  Energy-saving with automatic lighting control
  
• 
  Simple, reliable, hidden installation—no switches needed
  
• 
  Long warranty ensures peace of mind
  

Buy Now

Upgrade your lighting with the ST123 IR Sensor—elegant, automatic, and energy-efficient. Add to your cart today for smarter illumination!