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RC Plane battery voltage telemetry for only $6 from FMS
Wouldn't it be great to have an alarm when your battery gets to a certain voltage while you are flying. You can use the telemetry in some radio system, but you can also use this FMS Battery Tester Alarm for the "Poor Man's Telemetry". In this video I show how to use this in your rc plane
Link: https://www.fmshobby.com/products/rc...
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