Catalog > Consumer Electronics > Security & Alarms > Access Control > Video Doorphones Door Phone Door Phone GDP300MP WIRELESS DOOR PHONE Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Overview Wireless intercom Doorbell enables communication freely and conveniently remotely operating automated gates or door strike locks all without cables Features Full duplex operatiopn between Gate station and handset Wireless Handset communication range 200~300 meters Wireless, no need for cabling Maximum of 4 handsets Standby time ~72 hours after fully charged Calls from Gate station transferable between Handsets Operating Frequency : 46~49 Mhz System Includes : Gate Station Control Box Handset Long Range Reciever