Specification Brand : ATO.COM Label : ATO Manufacturer : ATO ProductGroup : Home Improvement ProductTypeName : RELAY Publisher : ATO Size : AC/DC 24-48V SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/41pJcqtSonL._SL75_.jpg SmallImage_Width : 75 Studio : ATO Title : ATO Phase Voltage Monitoring Sequence Relay 1 Phase Voltage Protection Relay Under Over Voltage, with 1 CO + 1 NC Contacts, AC/DC 24-48V