https://community.arlo.com/t5/Arlo/Adding-audio-camera-to-system/m-p/1281841#M34738 <P>The original Arlo uses 4 - 123 type cells / no audio.... The Arlo PRO has audio</P> <P>&nbsp;</P> <P>Either camera can be used on either base unit</P> Thu, 11 May 2017 16:48:08 GMT TomMac 2017-05-11T16:48:08Z https://community.arlo.com/t5/Arlo/Adding-audio-camera-to-system/m-p/1281743#M34737 <P>I just purchased a Arlo system from Walmart the other day. &nbsp;I'm at work so I don't even know the model number. &nbsp;It came with the base station and 3 cameras for 399.99. &nbsp;Each one of the cameras use 4 CR123A bartteries. &nbsp;I love it and now want to add another camera to the system. I know how to add but my question is: &nbsp;I'm going to Staples to get a Camera that has audio capability for 189.00 and was wondering if someone might know if this will be compatible with the information I have provided. &nbsp;Thanks</P> Thu, 11 May 2017 14:20:53 GMT https://community.arlo.com/t5/Arlo/Adding-audio-camera-to-system/m-p/1281743#M34737 Glassman3363 2017-05-11T14:20:53Z https://community.arlo.com/t5/Arlo/Adding-audio-camera-to-system/m-p/1281841#M34738 <P>The original Arlo uses 4 - 123 type cells / no audio.... The Arlo PRO has audio</P> <P>&nbsp;</P> <P>Either camera can be used on either base unit</P> Thu, 11 May 2017 16:48:08 GMT https://community.arlo.com/t5/Arlo/Adding-audio-camera-to-system/m-p/1281841#M34738 TomMac 2017-05-11T16:48:08Z