Bestgle 2 Pack 4-Channel Relay Module DC 12V with Optocoupler, Relay Board for Arduino UNO R3, MEGA R3, STM32, Raspberry Pi, DSP, ARM, PIC, AVR & Smart Home Projects

• 4-Channel Relay Module 12V – Features 4 independent relays with DC 12V power supply, supporting load voltage up to AC 250V 10A / DC 30V 10A, ideal for switching applications.
• Microcontroller Compatible Relay Board – Designed with a standard interface, this relay module can be directly connected to Arduino, Raspberry Pi, STM32, PIC, AVR, and ARM microcontrollers.
• Relay Module with Indicator Lights – Equipped with working status LED indicators, making it easy to monitor relay activity and ensuring safe and reliable operation.
• Optocoupler Isolation for Stable Performance – The relay interface board uses optocoupler isolation to improve signal stability, reduce interference, and protect your microcontroller projects.
• Versatile Applications for Control Systems – Widely used in MCU control, PLC control, industrial automation, smart home projects, DIY electronics, and robotics, making it a must-have relay module kit.

Bestgle 2 Pcs 4 Channel DC 12V Relay Module with Optocoupler for R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 for Raspberry Pi This relay module is 12V active low. Relay output maximum contact is AC250V 10A and DC30V 10A. Standard interface can be directly connected with microcontrollers. This kit is compatible with Arduino IDE, Raspberry Pi and STM32. 4-channel relay interface board, which can be controlled directly by a wide range of microcontrollers such as AVR, PIC, ARM, PLC, etc. It is also able to control various appliances and other equipments with large current. Input IN1, IN2, IN3, IN4 signal lines are valid at low levels. VCC, GND power input terminal, can be relay alone power supply relay power input JD-VCC. Specification: Product Name : 4-Channel Relay Module Output Channel : 4 Power Supply : 12V Load Voltage : AC 250V 10A,DC 30V 10A Total Size : 134mm x 52mm x 17mm/ 5.3" x 2.0" x 0.7" (L*W*H) Mounted Hole Size : 3mm/ 0.12" Upper Mounted Hole Center Distance : 129.2 x 46.7mm/5.1" x 1.8"(L*W) Lower Mounted Hole Center Distance : 128.5 x 46.7mm/5.1" x 1.8"(L*W) Package Inlcuded: 2 x 4 Channel 12V Relay Module