... , waterproof, shockproof, antimagnetic, anti-disassemble. Product Introduction: Name: Contact Guard Tour Checking (Short wand)Model: L812Memory:2,000 records/8,000 ... to patrol, the site button stores the guard tour geographic information, the guard carry the recorder, when he arrives patrol ... other data automatically recorded in the recorder. When the guard finishes his patrol, he just needs to insert ...