... Motorola, HID, EM, Mifare one, etc.). Means of communication: RS232 RS485 jumper-free adaptive 9600 baud Function Description: ... serial port, support 256pcs serial port) Operating temperature: -40 to 70 degrees Celsius Run Humidity: 10-90% RH, non-condensing Signal output communication ... ,000 records Power failure protection measures: high-speed flash memory design, and never lose data Max distance ...