... .Frequency:433/315mhz or others 3.chip: fixed/learning/rolling/copy 4.rf remote control pt2260 rf remote control pt2260 :This product is ... beautiful and generous;internal circuit desigh of science,using SMT chip comonents,SAW reonator frequency stabilization,with high stability,low power ... :According to customers needs 11.bottons:1--4 buttons 12.Chip and operating mode:Hopping code(HC301,300,200 and so ...