The DoorBird A1121 is a compact, IP-based multi-technology access control system that can be installed as a stand-alone solution. It enables secure access control in areas where the installation of an IP video door station is not possible or desired, e.g. at back and side doors, garages and underground garages, storage and packing rooms or bicycle and machine rooms. It can also control elevators. The keypad is illuminated, so the device can be installed in the unlit environment. Thanks to its compact shape, the device can be easily mounted on a door frame. The access control device is also ideal for creating one-time or temporary access codes for visitors.

The device is designed for indoor and outdoor installation. Besides the flush-mount and surface-mount version, a retrofit version is available for existing front panels. The front panel is made of solid 3 mm (0.12 in) brushed stainless steel. All buttons are backlit. The DoorBird A1121 can be connected to the network via WLAN or LAN cable. If connected using a network cable, the device can be powered via Power over Ethernet (PoE). Should the Internet temporarily fail, all functions continue to operate within the local network.

Apart from the network connection and power supply, no further hardware is required. The software for the IP access control solution runs within the device. The DoorBird A1121 is equipped with two relays and has a configurable Wiegand output interface for integration into an existing access control or alarm system. Using HTTP(S) calls, the device can be integrated with third-party home and building automation systems. All settings can be configured remotely using the free DoorBird app or the web-based administration tool.

Individual schedules, validities and actions for each PIN code and RFID transponder can be defined at any time. By pairing the DoorBird IP Access Control Device with the DoorBird IP I/O Door Controller A1081, up to three additional gates, doors or elevators can be controlled in a tamperproof way – even if they are not located near the device. The integrated tamper sensor can detect that the device is being removed and, for example, send a push message as an alarm in real time.