2 Beams Series Active Photobeam Sensor with 8 Frequencies
● Adopts unique spherical Fresnel lens, more powerful in light focusing
● New filtering structure to multi-layer sundry lights, stronger capacity of anti-interference
● Multi-grade thundering-defending system, more dependable for outdoor usage
● Super stable digital two infrared beams with frequencies and pulse synchronization
● Fully airproof structure, effective waterproof, dustproof and insects-proof
● Beams response time adjustable, fit for various environments.