Zipabox Security expansion module expands Zipabox to support variety of wired security sensors and accessories. The module is easily plugged into Zipato expansion slot. Product features six zone inputs, one supervised siren output, one siren input, one solid state relay PGM output, and one general purpose serial port (user-selectable between RS-232 and half-duplex RS-485 mode). The PGM output offers user-selectable positive or negative triggering. The module also provides supervised auxiliary power output and a lead-acid battery charger, allowing you to power connected devices. Security Module on your Zipabox can use up to 6 additional zone inputs. FEATURES: 6 on-board wire zones, 1 siren input, 1 on-board solid state relay PGM output, negative or positive triggering (user selectable), 1 supervised bell/siren output, 1 supervised auxiliary power output, 1 general purpose serial port, 1 lead-acid battery charger. It also includes USB port for connecting 3G USB stick for backup internet connection so you never lose connection with the cloud.