DESC: Spectra IV SE was designed with ease of installation and ease of maintenance in mind. Each dome system consists of three components: a back box, a dome drive, and a lower dome. These three system components are interchangeable with other Spectra IV SE dome systems, making retrofitting and application adjustments simple. Also, dome drives and lower domes can be removed and replaced reducing maintenance time. Day/night with Lowlight technology 128x wide dynamic range Motion detection and electronic image stabilization 35x optical/12x digital zoom PDF Spec Sheet