8Channel RS232 TTL232 IO Control Switch Board Com DB9 Serial Port for Momentary Self-locking Interlock Latch Delay Relay

Descriptions Operating Voltage DC 5V 5V Version DC 6 24V 12V Version Operating Current 10 15MATwo serial ports RS232 DB9 interface TTL 232 interface8 Output control pins 5V TTL level low level default high level outputOpen Close Momentary Self locking Interlock Delay Only AT command All Relays Open All Relays Close 8 CommandsTwo kinds of commands AT command and 8 byte command the two commands are automatically recognized no need to switch Under the Delay command the maximum delay is 9999 seconds Only AT command Size 54 x 31 x17mmApplication Automated industry PLCRelay ModuleSmart Home Home Automation Identification system Motor FWBW CCTV Camera PTZ Control Security system LED dot matrix screen RS232 remote control Package Incldued 1 x 8Channel RS232 TTL232 IO Control Switch Relay Board