| Detection method | Diffuse-reflection |
| Model | NPN | PT18V-D50BNW | PT18V-D50BNWR |
| PNP | PT18V-D50BPW | PT18V-D50BPWR |
| Sensing distance | 50cm（Distance adjustable） |
| Standard sensing object | White paper with 90% reflectivity（200*200mm） |
| Output mode | Light-ON/Dark-ON wire switching |
| Light source |
| infrared light 850nm | Red LED 620nm |
| Power supply voltage | DC 12～24V ±10% ，impulse（P-P）＜10％ |
| Residual voltage | ＜2V (Load Current：≤100mA) |
| Current consumption | ＜20mA |
| Load current | ≤100mA |
| Circuit protection | Power reverse direction connection protection |
| Response time | <1ms |
| Indicator light | Output LED: Orange LED Power/stable: GreenLED |
| Connection | Cable 2m（PVC） |
| Ambient temperature | Work：-25～+55℃；Store：-40～+70℃，(No dew condensation or icing allowed) |
| Ambient humidity | Work：35～85%RH，Store：35～95%RH，（No dew condensation） |
| Ambient illumination | Sunlight: <10,000Lx lamplight:<3,000Lx |
| Withstand voltage | 1000 VAC, 50/60 Hz, 1 min.between current-carrying parts and case |
| Insolation resistance | ＞20MΩ（DC500V megger）between current-carrying parts and case |
| Anti-vibration | 10~55Hz double-amplitude 1.5mmX,Y,Z 2h |
| Impact resistance | 500 m/s² (X, Y, Z directions, 3 times) |
| Protection degree | IEC IP65 |
| Material | Housing | PBT+ABS |
| Lens Holder | ABS |
| Lens | PMMA |