... entrances and exits of office, factory , hotel ,school ,etc .All input /output are using anti-jamming protection and over-voltage ... product experiences the strict degradation test before leaving factory.The greatest advantage of it very easy to install, with multifunctional & ... Verification mode : 1:1 or 1:N Access Control : 50 Time Zone ,5 Grouping, 10 Combination, Holiday Management ,support many ...