Arlo HD security cameras have everything you need to cover every angle, indoors or out. Arlo Wire-Free HD security cameras are weatherproof and have night vision. Arlo Q AC-powered cameras have exceptional 1080p HD video and 2-way audio. Security is simple and affordable with free cloud recordings and the flexibility to expand your system. System: Video server + camera(s) - wireless - IEEE 802.11n - 2.4 GHz Camera: 4 cameras - outdoor - night vision Manufacturer Warranty: 1 year System: Video server + camera(s) - wireless Network Interface: IEEE 802.11n Wireless Frequency Band: 2.4 GHz Package Content: 4 cameras, power adapter, 12 lithium batteries (CR123), outdoor mount Cables Included: Network cable - 1 pcs. Warranty: 1 year RAM: 128 MB Flash Memory: 128 MB Features: LED indicator Quantity: 4 cameras Camera Type: Outdoor Sensor: CMOS Field Of View: 110 degrees Night Vision: Yes Infrared Distance: 25 ft White Balance: Auto Min Operating Temperature: 14 °F Max Operating Temperature: 122 °F Compliant Standards: IP65 Network Port: 10/100Base-T Details: Video server: 8.5 in x 6.5 in x 2.2 in - 11.3 oz