Based on the search results, the AS-20 is a widely available, versatile photoelectric switch used for the automatic control of street and outdoor lighting.
The table below summarizes its key details from the information found:
| Feature | Details |
|---|---|
| Core Function | Automatically turns lights ON at dusk and OFF at dawn based on ambient light -4-5. |
| Key Feature | Intelligent delay circuit to prevent false triggers from passing light (e.g., car headlights, lightning) -4-5. |
| Electrical Ratings | Voltage: AC 110V / 220V, DC 12V -4-5 Current: 10A -4-5 Max Power: Incandescent ≤ 1000W; Energy-saving/LED ≤ 100-150W -4-5 |
| Design & Protection | Waterproof & dustproof (IP54 rating mentioned) for outdoor use -4-5. Size: Approx. 10 cm x 7 cm -4. |
| Compatibility | Compatible with LED, energy-saving, fluorescent, incandescent lamps, and exhaust fans -4-5. |
| Common Applications | Street lights, highways, gardens, parks, factories, ports, airports, farms, schools -4. |
| Purchase Channels | Available on Amazon -1, eBay -2-3, and specialized retailers like VIOX -4 and Unigulf Supply -5. |
???? Installation and Usage Tips
For optimal performance, keep these manufacturer tips in mind:
Avoid Direct Light: Do not point the sensor towards midday sun or artificial lights (e.g., other street lamps, windows). North-facing or shaded installation is best -4.
Check Installation: It is designed for outdoor use, but ensure wires are properly sealed to prevent water ingress -4.
Test with Patience: When testing, it may take up to 5 minutes to switch after a change in light. Cover it completely with dark material to simulate night -4.
???? Where to Buy and Price Reference
The AS-20 is sold by multiple vendors with slight variations in branding and packaging. Based on listings, here's a general price reference: