The AXIS 9155301S 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 a compact IP intercom that has no camera has multiple functionalities such as calls to your smartphone and is easy to integrate into an existing Home Automation system. Calls can be received in the home by residents who can allow remote unlocking of the door via the AXIS Indoor Talk answering panel. 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