With ZenCom, the user can interact with his Zennio Intercom from anywhere in the world. ZenCom allows you to see who is ringing your doorbell, having a conversation and even open remotely as if you were at home. LINKS User manual: https://www.zennio.com/documents/manual_zencom_en Privacy Policy: https://sip.zennioapps.com:4003/res/ZencomPrivacyPolicy.pdf EULA: https://sip.zennioapps.com:4003/res/ZencomTermsOfUse.pdf