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it's designed for DIY enthusiasts and anyone in need of a water pumping solution
short circuit protection
your IoT journey becomes efficient and cost-effective
Robotic arms
you can make a universal remote controller with the learning function
Four CHANNEL 12V ULN2003 BASED RELAY BOARD MODULE ultrasonic it's designed for DIY enthusiasts4 Channel 12V ULN2003 based Relay Board Relay board module is used for controlling higher current loads from your microcontroller development board, PC parallel port or Arduino Uno. This board has four (4) on board relay which can switch up to 7Amps. Relays terminals (C, NC, NO) are accessible through screw terminals which makes wiring up the board very easy. The relay is safely driven by ULN2003 IC hence your input device, such as Arduino, is