This is not an option, the older RDS-2 was used with the older Falcon Monarch ELR devices. The power supply would apply 24VDC for 1 second then drop down to 5VDC for the remainder of hold time. If using a newer PS873 or PS914 with the older ELR devices you will burn out the solenoid as these power supplies maintain at 24VDC. There are no power supplies available for this application anymore.
Related solution: Is the Falcon RDS-2 power supply still available for the ELR devices?
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