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Jeanoko RS232 DB9 Female Interface 16-Channel Relay Board Serial Port Smart Module 8 Working Modes Relay Module for Automation Control
Working Modes: The relay module offers 8 different working modes, including open, close, jog, self-lock, interlock, delay, all open, and all close. These modes provide flexibility in controlling the relay channels based on specific requirements.
Automatic Recognition: The relay module supports AT command and 8-byte command modes. These commands can be automatically recognized without the need for manual switching. The module allows for a maximum delay of 9999 seconds under the AT command, providing flexibility in timing applications.
Multi-channel Control: This relay module is a 16-channel relay module, allowing for the control of multiple channels simultaneously. This feature makes it suitable for a wide range of applications.
Gerry H.
2025-07-27 09:53:16
Excellent, Inexpensive relay board you can control over RS-232.There are various versions of the protocol depending on the versionof the board. I have bought various versions and they all worked.There is also a RS-232 control board without the relays, that youcan use with other microcontroller relay boards.Various versions of the R223C16 Chinese Relay Board:COM port is 9600 baud, No Parity, 8 data bits, 1 stop bit.One Version:AT+OPEN={channel} Open the specified relay channelAT+CLOSE={channel} Close the specified relay channelAT+JOG={channel} Pulse the specified relay channel for 1 secondAT+SELFLOCK={channel} Set the specified relay channel to self-latching modeAT+INTERLOCK={channel1},{channel2} Set the specified relay channels to interlock modeAT+DELAY={channel},{delay} Delay the opening or closing of the specified relay channel for the specified number of seconds (only available in AT command mode)AT+ALLOPEN Open all relay channelsAT+ALLCLOSE Close all relay channelsAT+QUERY Query the current state of all relay channelsAT+VERSION Get the firmware version of the relay boardAnother Version:AT+O{channel} Open the specified relay channel (e.g., AT+O1 to open relay channel 1)AT+C{channel} Close the specified relay channel (e.g., AT+C1 to close relay channel 1)AT+J{channel} Pulse the specified relay channel for 1 second (e.g., AT+J1 to pulse relay channel 1)AT+S{channel} Set the specified relay channel to self-latching mode (e.g., AT+S1 to set relay channel 1 to self-latching mode)AT+I{channel1},{channel2} Set the specified relay channels to interlock mode (e.g., AT+I1,2 to set relay channels 1 and 2 to interlock mode)AT+D{channel},{delay} Delay the opening or closing of the specified relay channel for the specified number of seconds (e.g., AT+D1,5 to delay the opening of relay channel 1 for 5 seconds)AT+A{channel} Toggle the state of the specified relay channel (e.g., AT+A1 to toggle the state of relay channel 1)AT+LO Open all relay channelsAT+LC Close all relay channelsAT+Q Query the current state of all relay channelsAT+R{channel} Query the state of a specific channel.AT+V Get the firmware version of the relay board
GLR
2025-06-12 15:31:27
COM port is 9600 baud, No Parity, 8 data bits, 1 stop bit.Note: CR = r = Carriage Return --> terminates all commandsAT+O{channel} Open the specified relay channel (e.g., AT+O1 to open relay channel 1)E.g. "AT+O1CR", "AT+OFCR"AT+C{channel} Close the specified relay channel (e.g., AT+C1 to close relay channel 1)E.g. "AT+C1CR", "AT+CFCR"AT+T{channel} Toggle the state of the specified relay channel (e.g., AT+T1 to toggle the state of relay channel 1)AT+AO Open all relay channelsAT+AC Close all relay channelsAT+R{channel} Query the state of a specific channel. E.g. "AT+R1CR", "AT+RFCR"If the command works the relay board will respond back with 8 bytes.
Rio555
2025-02-02 18:00:31
How do I control this product? There is literally no documentation to be found anywhere.
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