Exhibit 4.11 Form of Stock Purchase Warrant THIS WARRANT AND THE SECURITIES ISSUABLE UPON THE EXERCISE HEREOF HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933. THEY MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED, HYPOTHECATED OR OTHERWISE...Stock Purchase Warrant • September 30th, 2002 • Integrated Security Systems Inc • Communications equipment, nec • Texas
