Infratech Zone Analog Controllers for Solid State Control Packages Increase your functionality, convenience and energy efficiency to your Infratech heating system with a custom control package. Infratech is a UL 508 listed manufacture and has the engineering, design and expertise to create custom UL listed control packages for any heating application. In order for a custom package to be complete, a main relay control panel must be purchased. The 1 zone analog control can control up to 3 zones on a relay main control panel. The 2 zone analog control can control up to 6 zones on a relay main control panel (3 zones per dial). The 3 zone analog control can control up to 9 zones on a relay main control panel (3 zones per dial). The 4 zone analog control can control up to 12 zones on a relay main control panel (3 zones per dial). There are many options and configurations based on how you would like to control each heater, please contact Infratech customer service team for the best solution (Phone: 949-474-3070). Select the right controls: Download Control Options Brochure. See all Available Control Options! Note: Please include the voltage and any specific wiring requirements in the notes when placing your order. For more information about the current lead time, email us at [email protected].