Sanwa Electronics RX-482 receiver. ● 2.4GHz FHSS4 spectrum diffusion method, 4ch ● Telemetry compatible * External rotation sensor and temperature sensor cannot be connected. * Rotation and temperature are limited to use with the SUPER VORTEX series. ● SSL compatible (SUPER VORTEX amplifier, etc.) * Patent pending: No. 2013-114184 ● Antenna-less ● Super Response (SSR) mode compatible (From the manufacturer's HP) Thank you for viewing. This is a used item. Operation has been confirmed. No case or other accessories are included. Please consider this item if you can accept the above.