User's Manual

4.Features
4.1Transmissionframe
ThetransmissionbeginsimmediatelyincaseofLOCKandUNLOCKbuttonispressed,butTRUNKbutton
isbegunafter0.5s.
Thetransmissionframeconsistsofthesynchronousframeandthedataframe.Thesynchronousframe
has30synchronouscodesthatitwillbeusedforthereceivertowakeup.Thedataframeconsistsof
24bitlengthidentificationcode,16bitsecuritycodeandfunctioncode.16milliondifferentidentificationcodes
areavailable.
Thesecuritycodeisalwayschangedincaseofanyofthebuttonsispressed.Thetransmissiontimeis
typically600milliseconds.
4.2Batterysaving
Topreventthebatteryexhaustion,themicro-computerofthetransmitterisusuallyinactive.Whenthebutton
willbepressed,themicro-computerwakesupimmediatelyandjudgeswhichbuttonispressing.Thenthe
micro-computerconstructsthetransmissionframeandradiatesitfromtheantenna.Aftertransmitting,the
micro-computerswitchesstand-bymodebyitself.
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