Eletechsup 8CH DC 5V 12V 24V RS485 RS232 -TTL- Modbus RTU Control Module UART for Relay Switch Board PLC -DC 5V- 4-

Description:    1: Operating Voltage : DC 5V(5V Version) / DC 6-24V(6-24 Version) 2: Operating Current : 10-15MA 3: ''open'' ''close''  ''Momentary'' ''Self-locking'' ''Interlock'' ''Delay'' 6 Commands 4: Two instruction-control mode : AT command and MODBUS command 5: Under the AT command ,the maximum delay is 9999 seconds    Under the MODBUS command ,the maximum delay is 255 seconds 6 AT commands can be made serial HyperTerminal (serial assistant) Enter;    MODBUS commands can be made serial HyperTerminal (serial assistant)  OR ''Modbus Poll'' Enter; 7 Under the MODBUS command mode, it can support up to 247 devices in parallel 8 With RS485 and RS232 (TTL) dual bus interface 9 Output control pins 8, 5V TTL level, low level (default) / high level output 10 Size: 45 * 30 * 15mm 11 Weight: 10g       Instruction manual Please ask us after the purchase     Application    Automated industry PLC Relay Module Smart Home,Home Automation ; Identification system; Motor FW & BW; CCTV Camera PTZ Control;  Security system; LED dot matrix screen; RS485 remote control;