| LJK-0840S1NO LJK-0840N2NO LJK-0840S1PO LJK-0840N2PO |
| 检测距离 | 1mm | 2mm | ||
| 直流 (集体管) |
NPN 3/4线 |
常开 | LJK-0840S1NO | LJK-0840N2NO |
| 常闭 | LJK-0840S1NC | LJK-0840N2NC | ||
| 开＋闭 | ||||
| PNP 3/4线 |
常开 | LJK-0840S1PO | LJK-0840N2PO | |
| 常闭 | LJK-0840S1PC | LJK-0840N2PC | ||
| 开＋闭 | ||||
| 2线 | 常开 | LJK-0840S1TO | LJK-0840N2TO | |
| 常闭 | LJK-0840S1TC | LJK-0840N2TC | ||
| 交流2线 (可控硅) |
常开 | |||