The E2EC04S12WCB12M is a shielded, cylindrical proximity sensor designed for detecting ferrous metals. It features a 4 mm diameter housing, a 1.2 mm sensing distance, a PNP normally-open output, and is pre-wired with a 2-meter oil-resistant PVC cable. Operating on a 10 to 30 VDC power supply, this sensor has a response frequency of 4 kHz and includes protection against load short-circuits and reverse polarity. Its small size, IP67 rating, and robust SUS303 housing make it suitable for precise object detection in industrial automation environments where space is limited and oil resistance is required.