GD09ACEM TCP/IP, RS485/RS232 communication, wireless RF 868Mhz/with additional module, information input from 1/2 proximity readers and output for doorlock/barrier/relay up to 1А 12V, 32MB reserved memory on SD card, realtime clock with lithium battery, tamper switch input, 1 open/close input, 1 relay output, 1 siren output, 3 impulse inputs, AES 128 encryption