Adaptive Alpha Sign text message

Projects General Guidance
23

So.... This is what I put in.

Serial2.write("\x00\x00\x00\x00\x00\x01\x5A\x00\x02\xAA\x48\x45\x4C\x4C\x51", 15);
      Serial2.print("HELLO");
      Serial2.write("\x04");

When I put connect it to putty, not sign, putty shows me this.

Z▒HELLQHELLO

The sign does nothing.