Leuze IS 208MM/2NO-1E5-S12 Proximity Sensor
The Leuze IS 208MM/2NO-1E5-S12 Proximity Sensor (Part No: 50145946 ) offers a 12 mm diameter, M8 thread size, NPN NO (normally open) output, M12 Connector, 4 -pin connection. Manufactured by Leuze under the Leuze Proximity Sensor category, this model belongs to the 203 & 204 Series.
| Brand | Leuze |
| Product Type | Proximity Sensor |
| Product | IS 208MM/2NO-1E5-S12 |
Leuze IS 208MM/2NO-1E5-S12 Proximity Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Diameter | 12 mm |
| Thread size | M8 |
| Type of installation | Embedded |
| Supply voltage UB | 10 ... 30 V, DC |
| Typ. operating range limit Sn | 1.5mm |
| Switching outputs | NPN |
| Switching principle | NO (normally open) |
| Switching frequency, max. | 5,000 Hz |
| Connection type | M12 Connector, 4 -pin |
| Degree of protection | IP 67 |
| Housing | Stainless steel |
| Active surface | Plastic |
Precision-built for industrial demands, the Leuze IS 208MM/2NO-1E5-S12 Proximity Sensor features a robust stainless steel housing with an embedded M8 design, ideal for compact mounting in automation setups. Its sensing capability ranges from 1.5 mm to 40 mm, enabling accurate detection of metal targets at varying distances. With a switching frequency of 5,000 Hz, this model is suitable for high-speed processes where fast object presence detection is critical to avoid errors and delays.
The sensor operates on a wide supply voltage of 10–30 V DC, using NPN output with a normally open (NO) switching configuration. Its M12 connector type ensures secure signal transmission and easy installation. With an ingress protection rating of IP67, it withstands water spray, oil exposure, and dust accumulation — common in industrial automation, CNC machinery, and packaging environments. The plastic active face provides a stable electromagnetic field and maintains sensitivity, even in harsh operating conditions.
Manufactured under stringent quality standards by Leuze, the IS 208MM/2NO-1E5-S12 proximity sensor is trusted by engineers for its long operational life, immunity to electrical noise, and reliable detection consistency. When accuracy, speed, and ruggedness matter, this sensor offers a balanced mix of performance and protection. For further documentation, refer to the official Leuze product page or consult our engineering team for compatibility support.
The Leuze IS 208MM/2NO-1E5-S12 Proximity Sensor is a practical solution for real-time metal detection in fast-paced industrial systems. Whether installed in conveyor lines to detect part position, or in automated assembly machines to confirm component presence, its high-speed 5,000 Hz switching rate ensures instant and accurate response — even during rapid movements.
Its embedded M8 form factor allows it to fit into tight spaces, making it especially useful in robotic arms, linear transfer units, or sensor holders where larger sensors cannot be accommodated. In environments like automotive, packaging, and bottling plants, where frequent cleaning and vibrations are common, its IP67 rating and stainless steel housing deliver lasting reliability.
Designed to minimize false positives and maximize uptime, the IS 208MM/2NO-1E5-S12 helps maintenance engineers reduce troubleshooting time. That’s why this Leuze Proximity Sensor is widely chosen for both new installations and upgrades — delivering consistent detection performance where it matters most.

