RG631B 6-Ch DMSS Full-Range Rx w/RA-01 Telem This is the JR Radio DMSS 6 Channel Full Range Reciever with Telemetry RG631B.Features:DMSS system speed and security Telemetry system capable with built-in receiver voltage Low-profile, lightweight poly-carbonate case design Dual, built-in bi-directional coaxial antennas RA01L Short Range Remote antenna/telemetry module Failsafe support on all channels Status condition LEDs