... 1, support 900/1800 MHz2, Seed dial and redial function .3, Phone book function.4, Hand free function.5, Adjusting ... infra red range within 10 meter. Shenzhen Taifeng Network Equipment Co, Ltd. is a manufacturer which specialized in research, developing ... succeed in passing ISO 9001, CE, ROSH etc . GSM TELEPHONE system, Fire Alarm system, SHOP/HOME Security system. Gas alarm system,GSM wireless phone