Arlo Technologies Ultra is a high-end security camera system that offers 4K UHD video resolution and advanced features such as color night vision, two-way audio, spotlight, siren, and support for Alexa and HomeKit. The cameras are wireless and can be placed both indoors and outdoors. The Ultra SmartHub is required to use the system, which allows you to store footage in the cloud and manage your devices remotely. The camera's 180-degree view provides a wide field of vision, making it ideal for monitoring large areas. Overall, the Arlo Technologies Ultra is an excellent choice for those who want high-quality video surveillance with advanced features. The Arlo Ultra Add-on Camera is designed to work with the existing Arlo system and offers similar features as the main camera. It has a 180-degree view, color night vision, two-way audio, spotlight, siren, and support for Alexa and HomeKit. The camera can be placed both indoors and outdoors and is wireless. The Arlo Pro 2 Add-on Camera is designed to work with the existing Arlo system and offers similar features as the main camera. It has a 180-degree view, color night vision, two-way audio, spotlight, siren, and support for Alexa and HomeKit. The camera can be placed both indoors and outdoors and is wireless. The Arlo Pro 2 VMC4030P-100NAR Wireless Home Security Camera is a rechargeable security camera that offers night vision, two-way audio, wall mount, add-on camera, white (renewed), and works with the existing Arlo system. It has a 180-degree view and can be placed both indoors and outdoors. The Arlo Pro - Add-on Camera is designed to work with the existing Arlo system and offers similar features as the main camera. It has a 180-degree view, color night vision, two-way audio, spotlight, siren, and support for Alexa and HomeKit. The camera can be placed both indoors and outdoors and is wireless. The Arlo Pro VMC4030P-100NAR Wireless Home Security Camera System with Siren is a rechargeable security camera that offers night vision, two-way audio, wall mount, add-on camera, white (renewed), siren, and works with the existing Arlo system. It has a 180-degree view and can be placed both indoors and outdoors. The Arlo Pro 2 VMS4430P-100NAR Wireless Home Security Camera System with Siren is a rechargeable security camera that offers night vision, two-way audio, wall mount, add-on camera, white (renewed), siren, and works with the existing Arlo system. It has a 180-degree view and can be placed both indoors and outdoors. The Pro 2 4-Camera Indoor/Outdoor Wireless 1080p Security Camera System is designed to work with the existing Arlo system and offers four cameras that offer night vision, two-way audio, wall mount, add-on camera, white (renewed), and works with Alexa. The cameras have a 180-degree view and can be placed both indoors and outdoors. The Pro 2 4-Camera Indoor/Outdoor Wireless 1080p Security Camera System - White is designed to work with the existing Arlo system and offers four cameras that offer night vision, two-way audio, wall mount, add-on camera, white (renewed), and works with Alexa. The cameras have a 180-degree view and can be placed both indoors and outdoors. The Arlo Pro by NETGEAR Add-on Security Camera is designed to work with the existing Arlo system and offers advanced features such as color night vision, two-way audio, spotlight, siren, and support for Alexa and HomeKit. The camera can be placed both indoors and outdoors and is wireless. In conclusion, the Arlo Technologies Ultra is an excellent choice for those who want high-quality video surveillance with advanced features. The other products in this category offer similar features and are designed to work with the existing Arlo system.