3pcs 8Channel DC 5V RS485 Modbus RTU Control Module UART Relay Switch Board PLC

Descriptions Operating Voltage DC 5V 5V Version Operating Current 10 15MA open closeMomentary Self locking Interlock Delay 6 Commands Two instruction control mode AT command and MODBUS command Under the AT command the maximum delay is 9999 seconds Under the MODBUS command the maximum delay is 255 seconds AT commands can be made serial HyperTerminal serial assistant Enter MODBUS commands can be made serial HyperTerminal serial assistant OR Modbus Poll Enter Under the MODBUS command mode it can support up to 247 devices in parallel With RS485 and RS232 TTL dual bus interface Output control pins 8 5V TTL level low level default high level output Size 45 x 30 x 15mm Applications Automated industry PLCRelay ModuleSmart Home Home Automation Identification system Motor FWBW CCTV Camera PTZ Control Security system LED dot matrix screen RS485 remote control Package Included 3 x 8Channel DC 5V RS485 Modbus RTU Control Module UART Relay Switch