Spektrum RC X-Plus8 Expansion ModuleKey Features 8 channel expansion Dual battery ports Included Jumper offers option of using receiver power Allows fine tuning of 8 servos on non critical controls (bomb drops, lights, winches, gear, etc.) Overview The X Plus 8 module is designed to allow expansion of up to 8 servos for non control surface functions such as bomb drops, lights, winches, retractable landing gear, and many more. The X Plus 8 is compatible with Spektrum X Plus transmitters