1. wireless frequency: two option: 433mhz or 315mhz\r\n\r\n2. an adaptor: option: input electricity from 110 acv ~240 ac, customerized. \r\nadaptor choosing: two round pins, two flat pins, three pins, customerized\r\n\r\n3. wireless receiving distance in open place: >120m, indoor: 30~50m, \r\n(depend on the surrounding environment and wireless interference)\r\n\r\n4. standby current: <10ma\r\n\r\n5. alarm volume: internal :95db, external siren: 110~120 db\r\n\r\n6. one control panel with one telephone line and internal siren: working \r\nvoltage:9 dcv, 500ma.