Check the listing for details. Superelay Utility Control Interface by Henry Engineering, 2 Available. Condition: Used. Listed at 69.95 USD. This listing is for a single Superelay Utility Control Interface by Henry Engineering. Only the unit with attached power cord is included. 2 are available at this time. ➤Condition: Two units are available, both photographed. These units came from an operational environment. They have been power on-tested only with functional indicator lights as photographed. No further testing performed. 30 day free returns if there are any issues. ➤Shipping: Additional small items are eligible for combined shipping discounts. Add items to your shopping cart to view the total cost of shipping. Most orders ship same day when placed by 10 AM EST, Monday - Saturday. Feel free to request a shipping quote for combined shipping discounts.