3pcs DC 12V RS232 Serial Port Delay Relay Switch Module PC COM DB9 ARM MCU UART Remote Control Board

Description

Description:      - Working voltage: 12V - (DC12V)Standby current (all relays closed) 16MA, relay open 47MA, - Two serial ports: RS232 DB9 interface, TTL 232 interface- ''Open'' ''Close'' ''Momentary'' ''Self-locking'' ''Interlock'' ''Delay''(Only AT command)  6 Commands- Two 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: 56.5 *31.5 * 17.5mm- Maximum load: 10A / 250VAC, 10A / 125VAC, 10A / 30VDC, 10A / 28VDC, 10A / 12VDC Glossary: NO: Relay normally open contactCOM: Relay common contactNC: Relay normally closed contactOpen: NO connection COM, NC disconnect COMClose: NO disconnect COM, NC connection COMMomentary : Enter the Momentary command, the Rreceiver Relay is Open, delay of 0.5 seconds after, Relay is Close;Toggle  : Enter the Toggle command, the Rreceiver Relay is Open, Enter the Toggle command again, Relay is Close;Latched : Enter the Channel 1 Latched command, the receiver Channel 1 is Open, the Channel 2 is Close.Enter the Channel 2 Latched command the receiver Channel 2 is Open, the Channel 1 is Close.Delay : Enter the Delay command, the Rreceiver Relay is Open, delay of 0-9999 seconds(MODBUS command is 0-255 seconds )after, Relay is Close;During the delay, Eter the Close command, immediately close the relay Application:  Remote control, remote measurement system; Wireless meter  ;Smart Home,Home Automation ,Wiser Home;Access control   ;Identification system  ;Data collection; IT household appliance  ;Intelligence household appliance;Baby monitoring system;PLC Industrial control;LED Lighting control. Package Incldued: 3 x DC 12V RS232 Serial Port Delay Relay Switch Module