1. Working voltage: 12~24VAC/DC 2. Working current (24VDC): emitter: ≤15mA receiver: ≤30mA 3. Photocell wavelength: 940nm 4. Opposite emission angle: ≤±5º 5. Receiver range: ≥15m 6 Internal Return system adjustable Angle: 0～180 º 7. Working temperature: -20º～+60℃ 8. Relay contact loading capacity: 1A/30VDC 9. Waterproof class: IP54 10. Dimension: 127*50*28mm