FrSky Bind Board
The FrSky DHT module uses a separate board with a bind button, LED, and a toggle switch (attached via a connector a wiring bundle).
The toggle configures the RF Module for use with telemetry or non-telemetry receivers, and firmware-update mode. The toggle is not needed if telemetry-type receivers are used.
For bind-functions only the simple bind button is required. The visual-cue for low-power (range-check) mode is nice but it is also signaled by a continuous beep.
WIth that in mind, the "bind-board" isn't absolutely necessary and can be replaced by a simple push-button.
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