... wireless reliable connectionSIPO 2.4G wireless connection, use an automatic frequency-hopping technology, within 8 meters to provide reliable connectivity, while your ... : 20mAReceiver SpecificationsInput current: 5V DC, 30mAInterface Type: USB1.1RF (radio frequency) specificationCarrier Frequency: 2402MHz-2480MHzThe acceptable range of distance: 6m, 360 °