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48V G1/2" (BSP 1/2 inch) thread - 3 Wire - Non-Certified -
48V 20mm ISO thread - 3 Wire - Non-Certified -
48V 1/2" NPT thread - 3 Wire - Non-Certified -
Use with Zone Master PRO Type 1?and?Zone Master PRO Type 2 products. -
162V, PSTN