... Control switch 1.315-433mhz frquency optional 2.learning/fixed/rolling/copy code chip 3.CE,ROHS ... security,commercial security,industrial area by fixed code learning code rolling code and other codes. With low ... Materail:Metal and ABS 3.Encoding type:Fixed code/learning code /rolling code(optional) 4.High stability: ... on) Fixed code(2262,2260 and so on) Learning code(1527,2240,HT6P20B,HT6P20D and so on) ...