Video on-door speakerphone color Optimus

The Optimus VM-E4 video on-door speakerphone (white) 4" TFT LCD, color, permission 480х272, duration of conversation is 120 seconds, connection 4-wire with a calling video wall, management mechanical buttons, the Possibility of connection to 2kh calling panels. Supply voltage of AC of 100-240 V (the built-in BP), from 0 °C to +60 °C, the size of 170х120х20 mm, 330gr. Installation of the consignment note (assembly plate)