USB CID (calling identity delivery) box,get ID of incoming phone call, support dialing out, USB interface,connect directly ... PC USB CID (calling identity delivery) box, get call ID from incoming phone call to computer, support dialing out, USB ... impedance: in accordance with national standardPower: 0.2WCurrent: 20mAVoltage: 5VCapacity of anti-lighting strike: 4 levelCertificate: CE FCCWe offer SDK for ...