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R820 PCB A01 R820 Solid State Relay, 24 VAC Electronic PCB, 1 or 3 phases; replaces 021 0474 Viconics Description_Brass Nipple 1 Diameter Ni 1k Ohm @ 32F 2 1 2 X Ni 1k Ohm @ 32F These relays are designed for applications where a single pneumatic air signal requires two or three predetermined air pressure settings The Viconics R820 series SCR power controls are designed for cost effective replaces 021 0474
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