This relay module lets you switch AC circuits on and off in response to signals from microcontrollers such as Arduino or Raspberry Pi. It is designed for easy integration with 5V logic and microcontroller projects. Key specifications and design features Output drive capacity: 10A at 250V AC, 10A at 125V AC, 10A at 30V DC, and 10A at 28V DC. Operating voltage: 5V Coil drive enhancement: uses an 8050 transistor to increase relay coil drive for reliable operation. Control signal stability: includes a pulldown circuit on the control pin to prevent false actions when the input is idle. Flexible use: can be used as a singlechip development board module or as a controller for home appliances. Why you need it Simple control of AC loads from lowvoltage microcontrollers without complex wiring. Reliable switching with a dedicated pulldown to avoid accidental activation. Broad load compatibility across AC and DC voltages up to 10A, suitable for many small household and DIY applications. Readytouse module that fits into development projects and home automation setups. What makes it stand out current capability across multiple voltage domains (AC and DC) while driven by 5V logic. Improved coil drive through a dedicated 8050 transistor for more consistent switching. Builtin control pin pulldown to minimize misoperation rates in projects with floating inputs. Dualmode utility as both a development board module and a home appliance controller. Practical use scenarios Scenario 1: Use with an Arduino to turn a room lamp on and off based on a light sensor or timer. Scenario 2: Control a small fan or coffee maker from a Raspberry Pi for a timed automation routine. Scenario 3: Integrate into a home automation project to switch AC devices such as a powered strip, humidifier, or small heater under microcontroller control. This module provides straightforward AC switching driven by 5V logic, with robust features to support reliable operation in development and home automation projects.