Radiolink electronic RadioLink PRO 2.4GHz 12CH Transmitter w/ R9DS 10CH Receiver

Real-time Data Telemetry Support signal strength, receiver voltage monitored, and extended engine voltage telemetry module PRM-01 and OSD info telemetry module PRM-02. PRM-02 can feedback GPS, SPEED, voltage etc. on AT9S display when work with flight controller APM or PIX.