Digital Input, Digital Output, and integrated Analog to Digital Conversion make Hybrid Relay Controllers Powerful.  For the first time, users can monitor digital I/O and A/D signals and react to these signal using on-board relays, all under computer control.  Most controllers in this category have 5-Channels of 8-Bit or 10-Bit A/D.  The ES Series Wireless relay controllers have 8-Channels of 8-Bit or 10-Bit A/D, allowing you to monitor TTL/CMOS digital I/O Signals via wireless communication.  Click Here to see our complete line of wireless devices.  Click here to learn more about using wireless computer control for the first time.