Dual Line Design and switch output - The junction box output functions as an electronic switch with double conductive paths, enabling it to control the on/off state of signals or small loads in detection devices. High stability and optical isolation - A signal conversion insulation terminal block designed to isolate highly stable input points. Digital isolation is optical, enhancing signal integrity and safeguarding connected equipment. Four-channel level conversion - 4 channel level converter that can convert a PNP signal to NPN or NPN signal to PNP, supporting flexible interfacing between different logic families and sensor types. Electrical specifications and safety - Standard input voltage: 10-28 V. Output inrush voltage: 1 V. Isolation voltage at output: at least 3750 Vrms. These ratings support reliable operation and protection of both signal sources and loads. 2-3 practical use scenarios - Industrial automation: Interface sensors and actuators with a PLC in a way that isolates the control logic from field wiring, reducing interference and protecting controllers. - Detection and security systems: Use in detection devices to switch small loads or indicators while maintaining signal isolation between detection circuits and processing electronics. - Mixed-signal environments: Convert and couple signals between NPN and PNP configurations to accommodate different controllers and peripheral devices without redesigning circuitry.