SX1504/SX1505/SX1506 4/8/16 Channel GPIO WIRELESS .
SX1504 - (SX1504 - SX1506) 4/8/16 Channel GPIO
SX1505 - (SX1504 - SX1506) 4/8/16 Channel GPIO
SX1506 - (SX1504 - SX1506) 4/8/16 Channel GPIO