QR code module (ER007D-cost-effective model), One -dimensional code module (standard ER06), One -dimensional code module (medium with ER08), One -dimensional code module (high with X720E), QR code module (standard ER007), QR code module (ER006 in middle version), QR code module (high configuration ER108), QR code DPM module (ER114), Test board USB/TTL/RS232/RS485/External IO trigger/instruction control