{"product_id":"5pcs-dc-12v-rs232-serial-port-delay-relay-switch-module-pc-com-db9-arm-mcu-uart-remote-control-board","title":"5pcs DC 12V RS232 Serial Port Delay Relay Switch Module PC COM DB9 ARM MCU UART Remote Control Board","description":"\u003cstrong\u003eDescription:?\u003c\/strong\u003e         ? ? ?         - 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         ?         \u003cstrong\u003eGlossary:\u003c\/strong\u003e         ?         NO: Relay normally open contact         COM: Relay common contact         NC: Relay normally closed contact         Open: NO connection COM, NC disconnect COM         Close: NO disconnect COM, NC connection COM         Momentary : 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         ?         \u003cstrong\u003eApplication:\u003c\/strong\u003e         ??         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.         ?         \u003cstrong\u003ePackage Incldued:\u003c\/strong\u003e         ?         5 x DC 12V RS232 Serial Port Delay Relay Switch Module     \u003cbr\u003e     \u003cbr\u003e    \u003cbr\u003e    \u003cimg src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/banggood\/images\/FC\/10\/ad1462cd-70c9-449b-aadf-6630e0372c6d.jpg\"\u003e   \u003cbr\u003e    \u003cbr\u003e    \u003cimg src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/banggood\/images\/98\/CA\/38b9d1af-b016-4a82-96d8-cc5e5ca6d080.jpg\"\u003e   \u003cbr\u003e    \u003cbr\u003e    \u003cimg src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/banggood\/images\/EC\/C1\/3767af24-3438-4688-9549-7e5c7646c03a.jpg\"\u003e   \u003cbr\u003e    \u003cbr\u003e    \u003cimg src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/banggood\/images\/7C\/CC\/ee628458-14d5-491b-9fde-e69369b076e7.jpg\"\u003e   \u003cbr\u003e    \u003cbr\u003e    \u003cimg src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/banggood\/images\/BC\/F0\/a8263a72-1a0f-4843-96f9-f5b8c8bc9a0b.jpg\"\u003e   \u003cbr\u003e    \u003cbr\u003e    \u003cimg src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/banggood\/images\/2A\/F8\/0dc4d7f6-8a2a-4013-83f8-679416d3a184.jpg\"\u003e   \u003cbr\u003e","brand":"ZHIQIAN","offers":[{"title":"Default Title","offer_id":43935666176195,"sku":"ZHIQIAN-015422","price":695.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/wrsss.com\/products\/5pcs-dc-12v-rs232-serial-port-delay-relay-switch-module-pc-com-db9-arm-mcu-uart-remote-control-board","provider":"Wrsss","version":"1.0","type":"link"}