Description: Frequency : The Receiver Board Are 27Mhz, And The Receiver Board Is Suitable For 27Mhz Remote Control. Application : This Receiver Radio System Board For Diy Rc Boat Cars Tanks. Stable Signal : Long Remote Distance Receive And Transmit, Great Gift For Kids & Adults. Material : All Parts Made Of Pvc And Electronic Components, Durable And Solid. Reference : Receiving Board Input: 4V-6V. 4 Channel. The Remote Control Is Powered By 2X Aa Batteries(Not Included) Specification: Material: Electronic Components And Pvc Size: 12.5Cmx9.5Cm / 4.92X3.74Inch Package Includes: 1 Remote Controller 1 Receiver Board