[Wide Application] Adopts analog modulation technology, high frequency electromagnetic radiation and strong anti-interference ability. Perfect for residential community, home, hotel, parking lot, warehouse, factory, railway station, supermarket, etc. 100% Satisfaction GuaranteedThis Box Bullet Security camera is made with extreme care to provide you best result so that you won't lose any valuable video. The cutting-edge tech is used in it and hence we offer a 100% satisfaction guarantee! In case of any issue, just contact us and we will resolve your problem, 24/7 Hours Online Tech Support.