... which accept ainternet order 3. GPRS communication mode Customized Portable Wireless GPRS SMS Printers Hardware Instruction Pull to open the cover ... key:d, e, f, D, E, F, 34 key:g, h, i, G, H, I, 45 key:j, k, l, J, K ... code marked on GSM/GPRS module, can not modifyProduct Model: G-FM300Note Print 5-1-1New order arrived, GPRS Printer will ...