Radiolink PRM-01 Airplane Battery Monitor Module 1S-6S Voltage Real-time Telemetry, Low Voltage Alarm for Airplane Delta Wing Fixed-Wing Aircraft, Works with RX R12DS, R9DS

Price: $16.99
(as of May 22,2022 11:38:57 UTC – Details)

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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).
PRM-01 telemetry module is compatible with 1 cell to 6 cells battery(3.7~25.2V).