About Electronic Security Devices, Inc. (ESD) Clean, Efficient Security Power Supplies for Access Control, Security, Fire, and CCTV Applications ESD from Securitron offers products for approved OEM customers. Securitron, an ASSA ABLOY Group brand, through ESD specializes in the creation of reliable, efficient power supplies and accessories for approved OEM customers within the access control industry. Founded in 1996, ESD manufactures innovative products that have been tested, proven and approved for use with proximity card readers. ESD focuses on meeting and exceeding the unique specifications of our customers for companies of all sizes. A tradition of innovation and creativity is the keystone upon which ESD was founded. ESD products are only available to approved OEM customers. As the leader in electronic locking products and systems, Securitron is known for: Strength, durability and quality in its products A full suite of products and options offering solutions for any access control need The most premium, no hassle warranty A serious commitment to excellence in customer service A Bright Future Our LEED Silver designed, eco-friendly manufacturing facility in Phoenix, AZ features improved energy efficiency, air quality and sustainability. Backed by the strength of ASSA ABLOY and Securitron, ESD promises to deliver quality products for our approved OEM customers into tomorrow.