G-4500D-SIM300: M2M Mini-Programmable Automation Controller with LCD display, CPU 80186 80 MHz, SRAM 512 KB, Flash 512 KB, MiniOS7, 16 KB EEPROM, 2x RS-232, 1x RS-485, 1x Ethernet, 3 Digital Input Channels, 3 Digital Output Channels, 8 Analog Input Channels, GPS, GPRS / GSM modem, WT-25+50.

Economical unmanaged industrial Ethernet switch, 16x 10/100Base-T/TX, TP cable; AC220V, DC-48V, DC+24V, DC110V

G-4500P-SIM300: M2M Mini-Programmable Automation Controller with GPS function, GPRS/GSM modem, WT-25+50, CPU 80186 80 MHz, 512 KB SRAM, 512 KB Flash, MiniOS7, 16 KB EEPROM, 2x RS-232, 1x RS-485, 1x Ethernet, 3 Digital Input Channels, 3 Digital Output Channels, 8 Analog Input Channels,

M2M Mini-Programmable Automation Controller with LCD display and GPS function, GPRS/GSM modem, OS MiniOS7, WT-25+50, CPU 80186 80 MHz, SRAM 512 KB, Flash 512 KB, 2x RS-232, 1x RS-485, Ethernet, 3 Digital Input Channels, 3 Digital Output Channels, 8 Analog Input Channels.