ALEPH Security & Surveillance Technology Development Co., Ltd, a subsidiary of CSST, is specializing in manufacturing ALARM SYSTEMS, CCTV SYSTEMS AND ACCESS CONTROL. The product line includes Photoelectric Beam Detector, PIR, Control System, CCD Cameras, Speed Dome, DVR and Video Door Phone. In the overseas market, our products are sold more than 60 countries around the world. The products conform to the CCC, CE, FCC, RoHS and MA test standard implemented by ministry of public security.