Electronic Systems Design, Inc. introduces its ESDI Model 110400 Four Station Water Vending Controller for multi-station coin operated water vending machines. The controller conforms to UL-508, and complies with CEI/IEC 1000-4-4 for EMI susceptibility. The price for the ESDI Model 110100-4 Control Board with LED Display Panel & Cable is $729.00. The price including a Nema 4X Enclosure, 24VAC Power Transformer and MDB Cable is $799.00.