JMDM-PLC20DIO/JMDM-PLC20DIOMR Manual is a small high-performance programmable logic controller independently developed by Jingmindm Digital Machine Co., Ltd. It is suitable for small PLC needs in industrial occasions with less than 20 digital quantity control, directly programmed by Mitsubishi ladder diagram software, with power-off retention and online monitoring functions, with lightning protection, anti-strong electromagnetic interference, stable and reliable, cost-effective, easy to use, can replace foreign brands PLC for various control occasions within 20 points, and is equivalent to Mitsubishi FX1N in application; it can be flexibly applied to various industrial automatic control occasions, such as metallurgy, chemical, plastic, printing, light textile, food, packaging and other industries in production machinery, industrial assembly line, industrial control equipment of various machine tools.