Remote Wired Entry Alerts
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Entry Alert System With Chime, Seco-LarmEntry Alert System With Chime, Seco-LarmPerfect for monitoring an entry way / entrance or use as an entrance alarm. Other applications: offices, schools, warehouse, vehicle detection, etc. Retro-reflective design ( electric eye laser IR beam ). Range: Up to 22 feet (7m). Will make "ding-dong" sound or siren sound when the beam is interrupted. Speaker volume can be adjusted or turned off. When in siren mode, sounding time is adjustable from 3 to 30 seconds.
Plug-In Wired Entrance Alert, Rodann AV-200Plug-In Wired  Entrance Alert, Rodann AV-200The AV-200 is a hardwired door chime system takes a little more time to install, but with a plug-in transformer to power its electric eye, batteries are never needed. Just install and relax; the door bell system will alert with a chime for every entry or exit.