There is not much in the way of documentation on which power supply is needed for the SLX-3ES-2ST converter from Red Lion Controls. The snip below from the datasheet shows that we need a supply of 10-30V and at least 3W.
For In-stock options that match the voltage and wattage requirements please see:
AC DC Desktop, Wall Power Adapters | Electronic Components Distributor DigiKey
For all our options that match the voltage and wattage requirements please see:
AC DC Desktop, Wall Power Adapters | Electronic Components Distributor DigiKey
Please review the datasheets to ensure the power supply meets the needs of your application and other specifications.