Purchase Link:
https://www.banggood.com/Flysky-FS-CVT01-Voltage-Collection-Module-For-iA6B-iA10-Receiver-p-976303.html?p=6805044548439201605Q
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It's a very useful product for all RC lover because it helps you to monitor your battery status. By which you can calculate how much flight time or play time is left. And you also set an alarm for low voltage in your transmitter.
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