Excellent Design This pair of infrared detectors includes a transmitter and receiver to enable automatic sensing of ambient changes. When the beam is interrupted, it triggers an alert. Practical Use Dual beams provide fast response speed. With a premium shell, it is waterproof for reliable outdoor use. Warning Distance This intelligent device has an alarm range of up to 100 meters in outdoor environments. The optical lens allows up and down adjustment, along with structural fine-tuning for faster and more accurate alignment. Low Power Consumption Transmit power is automatically adjusted based on environmental conditions, significantly extending the lifespan of the emitter and reducing power consumption. Smart Alarm Technology Equipped with professional chips and strong anti-interference capabilities, it delivers advanced detection and alarm performance for modern security needs.