... as house security,commercial security,industrial area by fixed code learning code rolling code and other codes. With low consumption but high ... .Materail:Metal and ABS 3.Encoding type:Fixed code/learning code /rolling code(optional) 4.High stability:Adopting imported SMT component ... and operating mode Hopping code(HC301,300,200 and so on) Fixed code(2262,2260 and so on) Learning code(1527,2240,HT6P20B, ...