1The solar powered strobe siren can be used as the host to receive the frequency transmitted by the door magnet and PIR motion detector for sound and light alarm. 2Solar powered, low power consumption, enable to work for almost a month in rainy and cloudy weathe after fully charged. 3Low false alarm PIR motion detector, micro processing chip, high intelligence, high sensitivity. 4Ultra-thin door/window magnet with emergency help alarm, sense door and window opening and closing to ensure users are more secure. 5Unique appearance, it is a stylish, environmentally-friendly wireless solar sound and light alarm system.