Weatherproof-IP54-Smart-Wired-Doorbell-Link 2 Home-L2H-BELLWIRED-p-The-Link 2 Home-Smart-Wired-Doorbell-enables-you-to-answer-your-front-door-from-anywhere-Get-instant-alerts-when-someone-presses-the-doorbell-button-or-the-motion-sensor-is-activated-It-emits-its-own-exterior-audible-tone-&-can-be-easily-linked-with-the-Link 2 Home-Bell-Chime-sold-separately-for-inside-your-home-Secure-connection-the-camera-utilises-128-bit-SSL-encryption-p-p-With-full-duplex-2-way-audio-you-can-h