| 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 | 
 |     |