How to hook up 12V 8 relay modules without a micro controller. (VUPN688)

8 Relay Module Schematic

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8-channel-rs485-driven-relay-board-schematic - Electronics-Lab.com

8-channel-rs485-driven-relay-board-schematic

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8 Channel 5V Relay Module - Wiki
8 Channel 5V Relay Module - Wiki

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ESP8266 8-Channel Relay Module Home Automation - Hackster.io
ESP8266 8-Channel Relay Module Home Automation - Hackster.io

8 Channel LPT relay board - Electronics-Lab.com
8 Channel LPT relay board - Electronics-Lab.com

8-channel-rs485-driven-relay-board-schematic - Electronics-Lab.com
8-channel-rs485-driven-relay-board-schematic - Electronics-Lab.com

How to hook up 12V 8 relay modules without a micro controller. (VUPN688)
How to hook up 12V 8 relay modules without a micro controller. (VUPN688)

Wiring Bluetooth HC06 in 8 Channel Relay with Android & Arduino
Wiring Bluetooth HC06 in 8 Channel Relay with Android & Arduino

Wiring 8 Channel Optocoupler Relay Module | 14core.com
Wiring 8 Channel Optocoupler Relay Module | 14core.com

5V 8-Channel Relay Module - Pinout, Features, Working, Applications
5V 8-Channel Relay Module - Pinout, Features, Working, Applications

MicroPython: Relay Module with ESP32/ESP8266 (Guide + Web Server
MicroPython: Relay Module with ESP32/ESP8266 (Guide + Web Server