The Blue Box systemis the 100% digital replacement for traditional time clocks, twist timers and contactor packages. Panels and switches daisy-chain together using Cat. 5 patch cable with RJ45 connectors in any sequence. A photosensor input supporting the Blue Box outdoor photosensor is provided for controlling exterior lights. Ideal applications include small stand-alone systems such as: tenant improvement, specialty retailers and site lighting. Also used as a slave panel with the GR 2400™ system.