U-shaped sensing slot
The open slot accepts the elevator leveling vane without mechanical contact.
A U-shaped photoelectric leveling and position switch with DC 12–30 V operation, fast response and separate NPN and PNP output leads.
Three product views show the complete cable, sensing slot, mounting holes, label and four wire leads.



The open slot accepts the elevator leveling vane without mechanical contact.
Separate yellow NPN and white PNP output wires support the applicable controller input.
The housing provides two visible mounting holes for stable positioning and alignment.
| Item | Specification |
|---|---|
| Model | SGD31-GG-TZ2B2P |
| Product type | U-shaped photoelectric leveling / position switch |
| Working voltage | DC 12–30 V |
| Response time | ≤ 1 ms |
| Red wire | DC 12–30 V |
| Black wire | 0 V |
| Yellow wire | NPN output |
| White wire | PNP output |
| Housing | Orange U-shaped housing with two mounting holes |
Opposed optical elements monitor the open slot. When an opaque leveling vane enters the slot, it interrupts the optical path and changes the selected output state for the elevator controller.
Confirm DC 12–30 V and the required NPN or PNP controller input before wiring.
Compare the housing, two mounting holes, sensing-slot position and cable route with the installation.
Align the vane through the center of the slot without contact, then verify the output change during commissioning.
Yes. The yellow wire is the NPN output and the white wire is the PNP output.
Use DC 12–30 V, with red for the supply and black for 0 V.
Confirm the complete model, supply range, required output logic, mounting-hole pattern, sensing-slot alignment and cable routing.
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