1.實現節省空間的薄型5.9mm 
2.寬8mm和小型的檢測距離都是2.5mm
3.采用防滑轉凸部，可用1根螺栓進行簡單的安裝，并且不要安裝架.
4.可以從三個方向觀察指示燈.檢查動作狀態方便.
5.適應各種用途的豐富機種.
另有圓柱形兩線接近開關，
常用型號APM-D3A1,APM-A3B1 APM-B3A1
APM-A3A1F APM-A3B1 APM-A3B1F APM-A3D1 APM-A3D1F APM-A3E1 APM-A3E1F APM-A3J1 APM-A3K1 APM-B3A1 APM-B3A1-03 APM-B3A1-05 APM-B3A1F APM-B3A1F-03 APM-B3A1F-05 APM-B3B1 APM-B3B1F APM-B3D1 APM-B3D1-03 APM-B3D1F APM-B3E1 APM-B3E1-03 APM-B3E1F APM-B3J1 APM-B3J1-03 APM-B3K1 APM-B3K1-02  APM-B3K1-03 APM-B3K1F APM-C3A1 APM-C3A1F APM-C3B1 APM-C3B1-03 APM-C3B1F APM-C3D1 APM-C3D1F APM-C3E1 APM-C3E1F APM-C3J1 APM-C3J1-S  APM-C3K1 APM-D3A1 APM-D3A1-03  APM-D3A1-05 APM-D3A1F APM-D3A1F-S  APM-D3A1-S  APM-D3A2 APM-D3B1 APM-D3B1-03 APM-D3B1F APM-D3B1-S APM-D3B2 APM-D3D1  APM-D3D1F  APM-D3E1 APM-D3E1F APM-D3J1 APM-D3J1-03 APM-D3J1-S APM-D3K1  APM-D3K1-03  APM-D3K1F  APM-D3K1-S