1)High quality 2)CE,ROHS,CCC,C-TICK,ISO; ... ; 4 pcs T-12 Ports Scanning mode support 1/16,1/8,1/4,1/2 Scan & static single color and double color ... on-board,can adjust test modelFunction expansionRF wireless modular,temperature & humidity sensorElectrical parameters +5V DC(4.5V~6V),Power consumption<0 ... ; 4 pcs T-12 Ports Scanning mode support 1/16,1/8,1/4,1/2 Scan & static single color and double color ...