Chaw nres tsheb qhov rooj chaw taws teeb rau Doorhan
Chaw nres tsheb qhov rooj chaw taws teeb rau Doorhan yog 433.92MHZ Rolling code, cov khoom yuav xa nrog roj teeb thiab cov lus qhia.
JOS lub tuam txhab yog cov chaw tsim khoom thiab xa tawm, tsim nyob rau hauv 2012, muaj tus kheej Development & Research peev xwm, mob siab rau peb tus kheej kom dhau los ua cov lag luam uas ntseeg siab tshaj plaws hauv chaw nres tsheb qhov rooj tej thaj chaw deb.