Check the listing for details. RoHS Socket Tester NIB. Condition: New. Listed at 20.00 USD. The RoHS Socket Tester NIB is a reliable tool used to test the functionality of RoHS relays. With the RoHS brand known for quality and durability, this socket tester ensures accurate and efficient testing of your electrical equipment. Whether for personal or professional use, this product provides a convenient and effective way to verify the performance of your relays.