Unshielded, Square type, DC 2-wire models, Sensing distance 7 mm ±10%, NO, Pre-wired models.Sensing head size25 mm x 25.5 mm x 38.5 mmTypeSquare type, UnshieldedPower sourceDC 2-wire modelsSensing distance7 mm ±10%Setting distance0 to 5.6 mmOperation modeNO.Sensing head size25 mm x 25.5 mm x 38.5 mmTypeSquare type, UnshieldedPower sourceDC 2-wire modelsSensing distance7 mm ±10%Setting distance0 to 5.6 mmOperation modeNO