Access Control 27
Access Control 27 : Physical security: (6) Access control system topologies: Access control System Using Serial Controllers: (7) IP Readers: Disadvantages: (a) In order to be used in high-security areas IP readers require special input/output modules to eliminate the possibility of intrusion by accessing lock and/or exit button wiring. Not all IP reader manufacturers have such modules available. (b) Being more sophisticated than basic readers, IP readers are also more expensive and sensitive, therefore they should not be installed outdoors in areas with harsh weather conditions or high possibility of vandalism, unless specifically designed for exterior installation. A few manufacturers make such models. The advantages and disadvantages of IP controllers apply to the IP readers as well
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