*Onsite service is set by technician and reason for problem; may possibly involve shopper access to inside of program and a number of or extended sessions. If concern is covered by guarantee rather than solved remotely, technician or portion will be dispatched, normally within 1-two business times following completion of https://scrapbox.io/dienphucthinh22-18558335/cap_tin_hieu_rs485_tai_dien_phuc_thinh