16-Channel Relay Module (12V)

Product Overview

• Switches up to 16 separate circuits simultaneously
• Operating voltage: 12 V DC
• Controlled via digital signals (3.3 V or 5 V)
• Relay outputs for loads up to 10 A per channel
• Learning module with built-in optocoupler for signal isolation

Product Description

This 16-channel relay module switches DC loads up to 10 A per channel. It is controlled via digital signals from microcontroller boards operating with 3.3 V or 5 V logic. The optocoupled input electrically isolates the control signals from the relay circuit, preventing interference in digital systems.

The module requires an external 12-V power supply with sufficient current capacity for the loads to be switched. Up to 16 independent outputs enable the construction of more complex circuits, such as simultaneously controlling multiple motors, solenoid valves, or heating elements from a central control unit. Control via standard GPIO outputs makes the module compatible with all common development boards.

Applications range from automation prototypes and conditional lighting circuits to experimental control systems for model-making or laboratory setups. It is typically used in projects where multiple load circuits need to be controlled centrally without subjecting the control circuit to high currents. A prerequisite is an external 12-V power supply with sufficient power for the connected loads, as well as a microcontroller or signal generator that provides digital outputs.

Safety Notice

This module is intended exclusively for building prototypes and for testing and development purposes; it is not intended for installation in residential electrical circuits. The relay outputs may only be loaded with voltages up to 12 V and currents up to 10 A per channel. When working on or near the power supply, especially when connecting wires manually, a qualified electrician must be consulted before commissioning.