... press keys:lock,unlock,car finding,remote central lock series,learning code 433 .92mhz,Model no:CD-RC4001.Features ... controls2.Technology Paramter:2.1 Out current:4A2.2 pull/push force:4.5kgs2.3 Work Life>10,0000 times2.4 ... Max pull range:22mmMain Control Module:2.5 Operation Voltage:12V2 ... keys:lock,unlock,car finding,remote central lock series,learning code 433