BYX-RJ11 series surge protective device is suitable for such as modem,DDN special line,fax-machine and phone-machine which protects the electric network shocked by the thunder or over voltage. 1)Operating voltage :DC110V /48V/24 2)Maximum continous operating voltage Uc:DC 150v / 60v /30v 3)Outer covering material :shield alumium Origin Wenzhou,China Delivery lead time 7 days Minimum order Optional Supply ability 120,000 pcs/month