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Quick Details

  • Type: Elevator Parts
  • Place of Origin: Shanghai, China (Mainland)
  • Brand Name: Sunny
  • Model Number: SN-GDC-3
  • Output Mode: NPN or PNP
  • Material: Fire-resistant plastic
  • Protection Level: IP65
  • Voltage: DC12- 24 V
  • DC12- 24 V: <20 mA
  • Working Temperature: -25℃ ~60℃
  • Relative humidity: 80%-90%RH
  • Light proof: 60,000Lux

Packaging & Delivery

Packaging Details hard paper box for each one
Delivery Time within 3 days

High quality infrared level sensor U shape type elevator optoelectronic switch Hitachi  




The SN-GDC-3 type photoelectric switch, developed and manufactured by Shanghai Sunny Elevator Co., Ltd, adopt infrared detection technology to make the response time in microsecond class. The product is widely used in elevator car leveling detection and other opaque strip detection. When any obstacle blocks the infrared light beam, the indicator light will light up, while the output signal tells linkage part to do relative automatic control action.

The super high-speed photoelectric switch has some features such as wide range of operation voltage, protection of power polarity, strong anti-jamming ability. The product adopt hermetic structure to be waterproof and dustproof. Output signal has two choices of PNP and NPN.

The product is widely used in OTIS elevator.






DC 12-38V Polarity Protected

No-load current

≤25mA (24V)

Output current

≤80 mA (External resistance 300 ohm,DC 24V)

Output mode

Transistor PNP(VCC-1.0V) or NPN( <1.0V)

Light immunity

≥ 100,000 Lux

Anti-group-pulse interference


Indicator light

Light up when blocked

Protection level


Working temperature


Storage temperature


Relative humidity

80%--90% RH




  • 1 x SN-GDC-3 Photoelectric Switch
  • 1 x Set of Accessory
  • 1 x User Manual





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