Lantronix G520 G520 User Guide - Page 24

2: Introduction Component User data storage USB RS-232 Digital I/Os Specification Internal: via the 256MB of parallel NAND Flash memory External: One (1) microSD card slot (microSD card not provided) One (1) USB 2.0 host port, Type A One (1) RS-232 serial port with DB9F connector Software configurable baud rate options from 2400 bps to 921600 bps For RS-485 serial operation, see Model-Dependent Features. Two (2) I/Os with common ground, with 3-pin COMBICON header and plug.  Input: 0 V dc ~ 2.5 V dc => ZERO; 3 V dc ~ 50 V dc => ONE  Output: open collector, 200 mA maximum, 50 V dc maximum Versatile I/O Status LEDs Reset button Two (2) I/Os with common ground, with 3-pin COMBICON header and plug. Each I/O is independently user-configurable as analog input, analog input suited to current loop (4 mA ~ 20 mA) sensors, or digital output.  Analog input: 0 V dc ~ 48 V dc range; 12-bit resolution; capable of counting pulses at up to 10 Hz  Analog input: 4 mA ~ 20 mA range, 12-bit resolution  Output: open collector, 200 mA maximum, 50 V dc maximum Nine (9) LEDs on top panel for network activity and status Soft Reset (reboot): Short press more than one (1) second and less than 5 seconds Hard Reset (factory reset): Long press more than 5 seconds and less than 20 seconds Model-Dependent Features Table 2-3 G520 Series Model-Dependent Features Feature Description Industry Gateway (G526) Security Gateway (G527 / G528) RS-485 operation (serial) 6kV (contact) and 8kV (air) ESD- Yes Yes protected, 2.5kV isolated, via 5-pin COMBICON header Half-duplex (factory setting) or Full-duplex mode (software configurable) PSE-PoE+ IEEE 802.3at standard-compliant No Yes (power over ethernet) 30 W per LAN port; requires PoE+ power supply accessory Wi-Fi Operation Number of Wi-Fi Clients in AP 12 12 mode G520 Series IoT Cellular Gateway User Guide 24