rolling code gate remote control 433 1)launch distance:50~ ... .Materail:Metal and PVC3.Encoding type:Fixed/learning/rolling code(optional)4.High stability:Adopting imported SMT component SAW ... request9.Chip and operating mode:Hopping code(HC301,300,200 and so on) Fixed code(2262,2260 and so on) Learning ... code(1527,2240,HT6P20B,HT6P20D and so on ...