1. Stainless steel security patrol system 2. 2000 records 3. free ... simple and convenient. By using microcomputer technology, it can store 2,000 records. Built-in real-time clock and ... s extremely easy to use. A complete kit of security patrol system consists of several parts: guard tour reader, ... : The product can be widely used in guard tour, security tour, line tour, train road tour, pipe line tour ...