This Blink Indoor (3rd Gen) security camera set comes with five wireless cameras that provide clear and detailed footage with a maximum resolution of 1080p (FHD). The cameras are powered by batteries and are compatible with Amazon Alexa, making them easy to integrate into your smart home system. In addition, the cameras are motion/PIR activated and use IP/Network surveillance technology. They are manufactured by Blink, a trusted brand in security cameras, and are designed for indoor use only. The unit type is a unit, and the dimensions are 7 cm in height and width. This security camera set is perfect for anyone looking to enhance their home surveillance.