Home | Sitemap | Contact Our Security Equipment ware selected major security company for over 30 years. Specially, Our Magnetic Contacts use a technique self-developed Reed switch technology. This market share is No.1 in Japan market. Security Equipment Item List   Magnetic Contacts Passive Infrared Detectors Photoelectric Beam Detectors Copyright©2007 HONG KONG ALEPH CO. LTD. All rights reserved. Powered by Vizz.