Technical Specifications: Material: alloy & imitation gum gall storage mode: FLASH Transmission mode: steady and rapid downloading and data transmission intelligent data logging device to a PC, enabling short-range (ie the PC) USB interface directly upload data. Dimensions: 11.5 * 4.4 * 2.5cm Weight: 186g g Temperature: -50 ℃ to +85 ℃ economy: the application of RFID technology automatically senses without contact, one plastic gall design waterproof, shock, dust, etc., low temperature ultra-low power design, can store 10,000 records (expandable) program designed to possess vandalism / battery test / replacement time errors memories and recording functions. Statistics: on the implementation of a comprehensive statistical analysis of inspection records, service analysis, "a clear understanding of the table, a chart glance." Reliability: Patrol uses modern industrial design and manufacturing technology, strict quality control, and environmental testing. Ease of use: easy installation, rain, dust, tamper, without wiring, easy to use. Applicable industry: such as property, residential place for officers to patrol did not have strict time requirements of the industry.