CallToU Window Speaker Window Intercom System User Manual
Lub Qhov rai Speaker Intercom System (Model CALLTOU) yog qhov kev sib txuas lus zoo rau kev lag luam nrog kaw qhov rais lossis qhov chaw nrov nrov. Nrog rau kev siv thev naus laus zis, lub suab zoo dua, thiab cov yam ntxwv tiv thaiv kev cuam tshuam, nws tau dav siv hauv tsev txhab nyiaj, tsev kho mob, thiab lwm yam. Cov neeg siv phau ntawv no muab cov lus qhia ntxaws, kev qhia tshwj xeeb, thiab cov lus qhia kev teeb tsa rau kev ua haujlwm zoo.