Akuvox R20BX5 On-Wall 5-Button SIP Video Door Phone

The Akuvox R20BX5 is the largest panel of the R20B series. It is chosen for small apartment buildings and office blocks with five units, where a keypad and directory screen would be more than residents need and each tenant should simply have a button with their name on it.

Each of the five buttons calls its own destination: the Akuvox indoor monitor in that flat, the reception's SIP phone, a ring group or the SmartPlus app. The visitor is seen through a 2MP camera with a 110° × 58° view, in colour by day and with infrared night vision after dark, and the panel wakes on its motion sensor.

For residents it doubles as the building's card reader. It takes 125 kHz EM cards, 13.56 MHz Mifare and DESFire EV1/EV2/EV3 cards and NFC from Android phones, and holds up to 20,000 cards, 4,000 users and a 1,000-entry contact list. Two relays release the entrance door and a car park gate independently; RS485 and Wiegand connect an external controller.

The aluminium front measures 185 × 85 × 24 mm, is IP65 rated and runs on one 802.3af PoE cable. This listing is the on-wall build, and Akuvox offers a flush back box and rain covers. For more than five units, a keypad door station with a resident directory is the better fit than more buttons.