Hi there, im repairing one of my client's equipment. Please refer to picture below. my problem is i need to replace the black components. the components is combination of relay which is uses 4-20ma as control current to complete the secondary circuit which is 15vac converting to 5vdc. can you guys help me out here. im stucked. i cant find any replacement component such as ssr or conventional relay to replace this item. this is custom made from China.
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