Hello Titirat Paungthon this tracker can offer communication protocol and the price is really low if you really want you can buy a sample to test, if it is ok then want to buy more, we can give you a discount
Hello Titirat Paungthonthis tracker can offer communication protocol and the price is really lowif you really want you can buy a sample to test, if it is okthen want to buy more, we can give you a discountbest wishSunny