The AXIS 9155301BS IP Solo is a stylish and compact Door Intercom unit. This is an audio-only version no camera of the IP Solo and features a single call button. The 9155301BF is manufactured as a stand-alone IP-connected intercom unit and includes a built-in microphone 1 call button and 1 surface-mount frame. The IP Solo is located at the front door - either external or internal for individual apartments - for visitors to call. IP Solo calls can be received in the home by residents who can allow remote unlocking of the door via the AXIS Indoor Talk answering panel. Compact Door Intercom Unit Audio only no camera plus single call button Stylish and durable - ideal for smart home system integration Surface mount installation Calls to mobile phone or tablet Integrated microphone and 2W / 8O speaker Finished in Black Ideal for pairing with AXIS Indoor Talk Answering Panels