RS-232 2-Channel Relay Controller Board with General Purpose Relays - IoT Devices & Sensors | Relay Controllers, Current Monitoring & Vibration Sensors
RS-232 2-Channel High-Power Relay Controller with Serial Interface LOW COST - NCD Store
Smart Home Using an 8-Channel RS232 Relay Module - Hackster.io
Amazon.com: DC 12V 4 Channel Relay Board, DB9 RS232 Remote Control UART Serial Port Switch for Car Motor 8.5 x 4.7 x 1.8cm : Electronics
Single Channel RS232 Control Relay Board - 12V DC — PMD Way
RS232 Relay Board 8-Channel 10 Amp with UXP Port: Relay Pros
Eaton Relay Serial Interface Card | Eaton
RS232 Relay Board 8-Channel 3 Amp DPDT with UXP Port: Relay Pros
12 Relay Channel RS232/485 Serial Control Hub - Redback Audio
8CH 12V RS232 Serial port Relay Module Switch Board for PLC Lamp LED Smart home | eBay
Marko Mäkelä's electronics projects: RS-232 Solid State Relay
IP Relay HWg-ER02b | HW-group.com
2CH RS232 Relay for PC UART COM Serial Port
DC 12V 2 Channel Serial Port RS232 Relay Module Board
KMtronic Ltd: RS232 4 Channel Relay Controller - RS232 Serial controlled - 12V
RS-232 Modbus RTU Interface to 32 Reed Relay Outputs Module - Sealevel
2CH RS232 Relay for PC UART COM Serial Port
Amazon.com: DC 12V 4 Channel Relay Board, DB9 RS232 Remote Control UART Serial Port Switch for Car Motor 8.5 x 4.7 x 1.8cm : Electronics
RS232 control relay board DC 24V serial switch module for PLC
DC 12V 2 Channel Serial Port RS232 Relay Module Board
8ch 5V 12V 24V RS232 IO Control Switch Board Com DB9 Serial port Relay Module | eBay
2 IN 1 RS232 & TTL232 Interface Serial Port Relay UART Switch PC USB – Many Favours
Relay Boards With I/O :: General Purpose :: RS232 Control :: 8 Channel RS232 Relay Board W/ISO Input Port with 120VAC Power
RS232 Relay
RS-232 Relays - Control from a PC and Expand to Read Sensors & More!
