... 3. Output: SPI signal DMX_SPI Controller+SPI ModuleMaster Controller 1, LCD display function;2,Key-press(4 pcs)operation function;3 ... *3CH,4*3CH,8*3CH,16*3CH)Master Controller 1, LCD display function;2,Key-press(4 pcs)operation function;3 ... stock at least 500pcsCertificates: CE and RoHSProductionPacking DMX_SPI Controller+SPI Module