The 5V Relay is an electrically operated switch used to control high-power devices using a low-voltage control signal. This compact relay is suitable for Arduino projects, automation systems, and electronic switching applications.

Features

• 5V DC relay coil

• Compact design for PCB mounting

• Electrical isolation between coil and contacts

• Suitable for switching AC and DC loads within rated limits

• Normally Open (NO) and Normally Closed (NC) switching options

• Ideal for DIY electronics and automation projects

Specifications

Pin Configuration

A typical 5-pin SPDT relay includes:

Confirm the actual pin layout using the relay’s datasheet or a multimeter before wiring.

Applications

• Arduino and microcontroller projects

• Home automation systems

• LED and lighting control

• Motor and pump switching

• Electrical appliances and control circuits

• DIY electronics projects

Advantages

• Enables low-voltage control of electrical loads

• Compact and easy to integrate into circuits

• Provides electrical isolation between control and switched circuits

• Supports automatic switching applications

Size

Compact PCB-mounted relay. Exact dimensions depend on the manufacturer’s specifications.

Package Includes

– 1 × 5V DC Relay (NR-S-105D-C)

Note

The relay’s printed 7A / 250V AC marking indicates a contact rating, not a guarantee that every load can be switched safely at that level. Use suitable protection and wiring, and take extra care with mains voltage. A bare relay usually requires a suitable driver transistor and flyback diode when controlled by an Arduino or other microcontroller.