This eight-door I/O Expansion is network, or ethernet, connected.  The wireless version of this controller is product 8DWE. This eight-door expander can be added to the 8DE to control up to sixteen doors or twenty elevator floors out of one 12x12 enclosure. Whether you are controlling doors or elevators, you won’t find a more compact, efficient, and easier-to-use door controller on the market.
Upgrade Any Wired System -The eight io makes upgrading a traditional wired system easier than ever. Take control of up to eight individual doors with the eight io controller. Easily convert existing wired systems to experience the benefits and capabilities of the pdk io platform.
Expand to Sixteen Doors - Using most or all of the existing door hardware, the eight io makes system upgrades effortless and cost-effective. 
Fully Supervised - Never be caught off guard again. Pdk.io intelligently monitors the network and wireless connectivity of each controller in your system and alerts you if any issues arise.
Elevator Control - Provide a seamless, more effective elevator solution. The eight io doubles as an elevator
controller, allowing control of up to ten elevator floors. The eight io is smaller and more powerful than any other controller in its class.
Plug n’ Play Connectivity - All io devices were designed to be plug n’ play, making them super easy to install right out of the box. It’s easy to add in any io device no matter how large the job is, and you can quickly scale a system to any size. A cloud node can connect with up to a thousand doors on a single platform.
Wireless or Network - Choose from flexible connectivity options that fit any application. The eight io is built for ultra-low bandwidth consumption and easily connects to existing or dedicated networks. Easily expand a system's wireless coverage (via network) using the ethernet gateway.