... which accept ainternet order 3. GPRS communication mode Customized Portable Wireless GPRS SMS Printers Hardware Instruction Pull to open the cover ... , k, l, J, K, L, 56 key:m, n, o, M, N, O, 67 key:p, q, r, s, P, Q, R ... : 123456)In the menu, you can make some settings through keyboard on GPRS Printer. When GPRS Printer stand by, press Menu ...