The Autonics PRD30-25DN is a non-flush installation sensor with a sensing side diameter of Ø30 mm and a sensing distance of 25 mm. It features a hysteresis equal to a maximum of 10% of the sensing distance, and a standard sensing target of 75 × 75 × 1 mm iron. The device responds at 100 Hz and has a packaged weight of about 143 g (approximately 180 g including packaging). An operation indicator is provided by a red LED. Power is supplied from 12 to 24 VDC, with ripple P-P at ≤ 10% and an operating range of 10 to 30 VDC. Current consumption is a maximum of 10 mA, and the control output is capable of up to 200 mA. Residual voltage is limited to 1.5 V. The unit includes protection circuits for surge, output short over-current, and reverse polarity. Insulation resistance is at least 50 MΩ (500 VDC megger), with a dielectric strength of 1,500 VAC at 50/60 Hz for 1 minute. It withstands vibration (1.0 mm amplitude, 10–55 Hz, 2 hours in each axis) and shocks of 500 m/s² (≈ 50 G) in three times per axis. Ambient operating temperature is -25 to 70 °C (storage -30 to 80 °C), humidity 35–95% RH (no freezing or condensation). The enclosure is IP67, and it uses a standard PVC black cable for connection. The case/nut are nickel-plated brass (Ø 8 mm sensing side, SUS303 connector type case); washer is nickel-plated iron, and sensing side material is PBT.