Omron E3S-LS20B4S1 | Omron 5–25cm Diffuse Photoelectric Sensor PNP

Description The Omron E3S-LS20B4S1 is a diffuse-reflective photoelectric sensor designed for precise object detection within an adjustable sensing range of 5 to 25 cm. It operates on a 12 to 24 VDC power supply and features a PNP open-collector output. The sensor includes built-in DC amplification and focusable optics for stable detection in industrial environments. Technical Specifications Condition New/Never Used Surplus Brand Omron Category Sensors & Switches Part Number E3S-LS20B4S1 Subcategory Photoelectric Series E3S-LS Sensing Method Area Focusable Diffuse-Reflective Sensing Distance 5 to 25 cm (Adjustable) Light Source Red LED Supply Voltage 12–24 VDC Current Consumption 40 mA max. Output Type PNP Open Collector Max Output Current 100 mA Response Time 1 ms max. Operation Mode Light-ON / Dark-ON (Selectable) Protection Rating IP67 Connection Method Pre-wired (2 m Cable) Housing Material Metal Weight 0.20 lbs Information About E3S-LS20B4S1 The E3S-LS20B4S1 belongs to the Omron E3S-LS series of focusable photoelectric sensors. It utilizes an area focusable reflective sensing method, allowing continuous adjustment of the sensing distance within its specified range. The unit supports Light-ON and Dark-ON operation modes selectable via wiring and includes built-in short-circuit protection. Designed for industrial use, it features a durable metal housing, IP67 ingress protection, and a pre-wired 2 m cable for installation. Key Features: Diffuse-Reflective Sensing: Area focusable detection for precise object identification. Adjustable 5–25 cm Range: Continuously variable sensing distance. PNP Open-Collector Output: Solid-state DC output up to 100 mA. 12–24 VDC Operation: Compatible with standard industrial DC power supplies. Light-ON/Dark-ON Selection: Wire-selectable operating mode. 1 ms Response Time: Fast detection for dynamic applications. IP67 Protection Rating: Dust-tight and waterproof construction. Built-in Sensitivity Adjustment: Integrated distance and sensitivity controls. The E3S-LS20B4S1 delivers the reliability and precision required for accurate object detection in industrial automation systems.