Technical Specifications: Material: alloy & imitation gum gall storage mode: FLASH transmission: USB/232 interfaces directly upload / remote (telephone line) remote upload / time (GPRS) wireless data upload three transmission modes Dimensions: 11.5 * 4.4 * 2.5cm Weight: 186g g Temperature: -50 ℃ to +85 ℃ economy: structural integration, durable, resistant to low temperatures. 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.