The module is great for basic communication with peripherals (e.g. Arduino) and you can use the onboard I/O in ATT mode (see instructions) but it would be very nice if the DSD Tech- Software would be further developed to support the relay tab (which seems to only support their BLE relay module) or to create a new PIO tab so you can control the 4 pin PIO output. It is necessary to solder wires to the module's PIO pins, but some of us would like to have this feature!
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