LOREX (Strategic Vista), LW2701AC1, Color Ultra Digital Wireless Indoor/Outdoor Night Vision Accessory Camera for LW2702 VGA (640 x 480) resolution camera IR night vision Built-in PIR motion sensor for accurate motion detection Durable weather resistant housing for indoor/outdoor use Built-in microphone and speaker for listening and speaking (2-way audio) SMA connector allows for the usage of higher power antennas to extend wireless range