Description: Product Name: DB9 Female/Male RS232 UART Switch Board DC 12V COM Serial port Relay Module PLC Package inlcuded: 1 x DC 12V 2Channel RS232 Relay Board(DB9 Female/Male Interface) Description: 2 Channel DB9(Female /Male) RS232 Relay Module; Power input: DC 12V(8.5-13.5V). PC Serial ports RS232 Control Relay; Power indicator : LED lights; Output indication : relay output with LED indicators,easy to see working status of the relay; Communication protocol: UART protocol communication, baud rate 9600kpbs, 8 data bits, one stop bit, no parity. Each data frame contains eight bytes. Two-way data transmission. Baud rate 9600kbps, 8 data bits, one stop bit, no parity. Each data frame contains eight bytes. PCB Size : 71x47mm Note: There are two types of DB9 interfaces.Female interfaces usually are common. Please choose the correct DB9 interface. 1 Control commands： 1. Reading status（reading the satus of the relay (on/off)） 0x55 0x56 0x00 0x00 0x00 0x00 0x00 0xAB 2. Relay open (issue this command ，Relay open , COM connect to NO ） Channel 1 ：0x55 0x56 0x00 0x00 0x00 0x01 0x01 0xAD Channel 2 ：0x55 0x56 0x00 0x00 0x00 0x02 0x01 0xAE 3. Relay close (issue this command ，Relay close , COM disconnect NO , and COM connect to NC ） Channel 1 ：0x55 0x56 0x00 0x00 0x00 0x01 0x02 0xAE Channel 2 ：0x55 0x56 0x00 0x00 0x00 0x02 0x02 0xAF 4. Relay toggle（Relay status reversal，if COM connect to NO，this commands will Disconnect COM to NO and Reverse COM connect to NC，and vice versa） Channel 1 ：0x55 0x56 0x00 0x00 0x00 0x01 0x03 0xAF Channel 2 ：0x55 0x56 0x00 0x00 0x00 0x02 0x03 0xB0 5. Relay momentary（Relay COM connect to NO，disconnect after 200MS ） Channel 1 ：0x55 0x56 0x00 0x00 0x00 0x01 0x04 0xB0 Channel 2 ：0x55 0x56 0x00 0x00 0x00 0x02 0x04 0xB1 Once issue a command, will have a return fame , 7th byte of return fame mean the satus of realy . 2 return command 1、Return relay open（return this command，mean COM connect to NO ） Channel 1 : 0x33 0x3C 0x00 0x00 0x00 0x01 0x01 0x71 Channel 2 : 0x33 0x3C 0x00 0x00 0x00 0x02 0x01 0x72 2、Return relay close（return this command，mean COM disconnect NO , and COM connect to NC ） Channel 1 : 0x33 0x3C 0x00 0x00 0x00 0x01 0x02 0x72 Channel 2 : 0x33 0x3C 0x00 0x00 0x00 0x02 0x02 0x73 Instruction manual Please ask us after the purchase Application Remote control, remote measurement system; Wireless meter ; Smart Home,Home Automation ,Wiser Home; Access control ; Identification system ; Data collection; IT household appliance ; As a PLC expansion board Intelligence household appliance; Baby monitoring system; Typial application : DC 1-110V OR AC 85-265V control circuit,Wiring diagram below(Note:If not DC 12V load, need another DC 12V power supply). ''LOAD'' may be LED lights, fans, motors and other DC AC equipment
Price: 4.98 USD
Location: Guangzhou
End Time: 2024-01-05T06:46:48.000Z
Shipping Cost: 2.99 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: eletechsup
Type: 12v Power Supply
Available Variations
Color: Female
Price: 4.98 USD
Available Quantity: 208
Quantity Sold: 8
Color: Male
Price: 4.98 USD
Available Quantity: 201
Quantity Sold: 1
