Then store the data and send the data to the distribution contracts an wire mesh and Smartphones to receive data from a distribution base comes yawai displayed on the screen.
Then store it and transmit the data to a distribution contract wireless and smart phones to get information from the bass distributed displayed on the screen.
And collect the data and sends the data to the distributed wireless signal and to receive information from users ตัวกระจาย wire base displayed on the screen.