All Metal M8/M12 – Connector type Filters Product Image | Model Number | Diameter | Sensing Distance | Function Sensing Distance Diameter Function Type Housing Length BIR12-NN4S-CX12mm4mmNPN NOBIR12-PN4S-CX12mm4mmPNP NOBIR8-NN2S-CX8mm2mmNPN NOBIR8-PN2S-C8mm2mmPNP NO