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AT9S Pro Excellent Anti-interference - DSSS&FHSS communication technology makes AT9S Pro transmitter with stable transmission signal and the control range up to 2.1 miles(3.4km) in air. Only 3ms' low latency response on all channels.

Powerful Features--10/12 channels, voltage telemetry(work with PRM-01), throttle cut, dual-rate, switch assignments, programmable mix control, fail safe, reverse polarity protection, multiple model options, etc.

Easy to connect, only need to connect to the receiver then can telemetry model voltage to the transmitter's display screen, no need flight controller or other external equipment and parameter settings.

Telemetering module voltage to avoid battery overworking. Mini dimension, only 1.3"*0.87"*0.37" and as lightweight as 0.25oz make PRM-01 won't become your drone's burden.

Compatible transmitter AT10II/AT10/AT9S Pro/AT9S/AT9, easy to connect with R12DS, R9DS (Old version receiver R10DS, R10D, R9D).