Electronic Systems Design, Inc. introduces the Model 050200A Multi-price Water Vending Machine Controller. The unit, now available to all bulk water vending machine OEMs, uses NAMAs Multi-Drop Bus (MDB) protocol. Programmed to vend one, three and five gallons of water, each with its own price, one control board can operate up to four vending stations, each with three products, while using only one MDB payment device. The controller features a periodic UV flush cycle, a lockout input for a TDS monitor or flood switch, a low water level input, pluggable/removable terminal blocks and a NEMA 4 enclosure.

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