Ready to expand your state-of-the-art home control system? It's a lot easier than you think thanks to a complete line of add-on modules. Designed to work with either the Modular Home Control System or the Leopard II Touchscreen Home Control System (each sold separately), these data acquisition modules offer a variety of expandable options, including low-current relays, supervised or analog inputs, voice messaging and modem capability. These modules connect to the system's central controller through a four-wire screw terminal and can be daisy chained together (4,000 ft. max). The aforementioned systems can support up to 128 modules for a grand total of 2,048 points (each input or relay output is one point). Available modules include: 8-Input Low-Current Relay Module -- This module has 8 inputs that can be configured as digital inputs, analog inputs (0-5V) or supervised inputs for detecting dry contact closures. It also has 8 low-current (24V @ 1A) relay outputs. 16-Input Module -- This module offers 16 inputs that can be configured as digital inputs, 4-20mA inputs, analog inputs (0-5V) or supervised inputs for detecting dry contact closures. 16-Zone IR Module -- Expand the IR outputs 16 at a time with this flexible module. Control multiple IR devices, including TVs, VCRs, stereo systems and more. Each IR output on this module is identified as a zone. Speak Easy Voice Output Module -- Store and replay 32 voice messages with this module. Features a built-in amplifier and volume control.