A low-voltage digital relay interface module compatible with 3.3 V and 5 V microcontrollers such as Arduino, Raspberry Pi, BeagleBone, and ESP boards. It allows a logic-level signal to control high-current loads up to 10 A safely and reliably. Key Features Designed for use with low-voltage digital systems (Arduino, Raspberry Pi, ESP, etc.) compatible with 3.3 V and 5 V logic. Uses a high-quality 3 V relay capable of switching up to 10 A at 35 VAC or 28 V DC. On-board LED indicates relay state. Includes terminals for normally open (NO) and normally closed (NC) contacts. Operates from 2.8 V to 5.5 V input voltage. Dimensions: ~38 × 33 × 20 mm; lightweight ~20 g. Typical Use Use this relay module to switch high-current or high-voltage devices (pumps, valves, lights, etc.) from a microcontroller that cannot supply the current directly. It’s suitable for automation, robotics, and control projects where isolating the load from logic circuits improves safety and reliability.
