Walkera 6CH RX601 Receiver For Walkera DEVO6S DEVO7 DEVO7E DEVO8S DEVO12S Transmitter/Radio Size : 33mm (L) X 20mm (W) X 13mm (H) Sensitivity : -105dmb Frequency Interval :  4M Receiver Battery: 4.8-6V1300mAh Compatible device : Walkera DEVO6S/ DEVO7E/ DEVO7/ DEVO 8S / DEVO10 / DEVO 12S