provide products:

GSM 3G 4G G202 gate opener

GSM 3G 4G G202PLUS gate opener

gsm 3G 4G RTU5024 gate opener

GSM 3G 4G RTU5024PLUS gate opener

GSM 3G 4G G203 gate opener

GSM 3G 4G CN505 gate opener

GSM 4G 4G CN305 gate opener

wifi gate opener wifi switch

And other customize products

my company promise for any bad product, we provide free replacement service:

history order in one year,for any bad products we will add the same quantity good ones in new order packages for free.