The single io controller is used for adding doors to a Cloud Node one door at a time or expanding an existing pdk system. Each unit is equipped with a fully supervised power circuit that monitors input, output, battery voltage, and overall controller health. Users receive important system notifications via text and email.
Fully Supervised Power & Connectivity
Never be caught off guard again. Pdk.io intelligently monitors the battery health, power status, and wireless connectivity of each controller in your system and alerts you if any issues arise. 
Scalability
Whether you need three doors or a thousand, the single io controller also allows you to scale the system to just the right size.  
Two Reader Inputs
Two reader inputs are ideal for applications where both read in and read out is a security requirement. Know exactly when users enter and exit a premise. The second reader input can also be assigned to trigger automated events.