Songle Single-channel 12V 30A Relay Module

This is the 12V variant of the Songle Single-channel 12V 30A Relay Module in Relay Modules. Available at ₹156.94 (₹133.00 + GST) with free shipping across India.

Songle Single-channel 12V 30A Relay Module power failure relay is a 1-channel relay module board with LED indicators, It can be controlled by microcontrollers such as Arduino AVR, PIC, ARM any other microcontroller operating at 12V.

The relay module uses an authentic quality mechanical relay and the industry’s top quality subminiature two-way isolation optical coupling which gives you the strong anti-interference ability, and stable performance.

The user can choose the relay control level, can be a high level off, also can be low level and off. The Songle Single-channel 12V 30A Relay Module Power Failure Relay contains a limited flow resistance, can directly use the power supply is negative control, you can also use the MCU I/O control.

The relay module equips a power indicator light (red), 1 road relay status indicator light (blue). With this relay, you can easily control electrical appliances, lights, etc.

Fault-tolerant design, even if the control line is brokes, the relay will not move.

Features :

1. Optical coupling isolation, driving ability is strong, stable performance; Trigger current is 5mA
2. The module can be set high level or low-level trigger by the jumper
3. Rated current of the interface is 16A
4. DC+ and JD+ shorted by jumper cap, DC- and JD- shorted with jumper cap, it is the same voltage between trigger terminal and relay control terminal.
5. High and low-level trigger mode selection. Jumper and L pin connection, IN pin, is low-level triggerJumper and H pin connection, IN pin, is the high-level trigger.

Module interface :

1. DC+: DC power supply positive pole
2. DC-: DC power supply negative pole
3. IN: signal triggering pin
4. JD+: relay control voltage positive
5. JD-: relay control voltage negative

Specifications:

1. Voltage version: 12V
2. The static current: 5mA
3. Working current: 190mA
4. Trigger current: 2-4mA
5. The module can be set high-level or low-level trigger by the jumper
6. The rated current of the interface is 16A

Package Includes :

1 x Songle Single-channel 12V 30A Relay Module Power Failure Relay

Songle Single-channel 12V 30A Relay Module Overview

The Songle Single-channel 12V 30A Relay Module is a compact power failure relay board designed to switch high-current loads up to 30A using a 12V control signal. It features LED indicators and optical isolation, making it ideal for integration with Arduino, PIC, ARM or any 12V microcontroller system.

Key Features of Songle Single-channel 12V 30A Relay Module

• Single-channel relay with 12V coil and 30A DC switching capacity
• Low static current consumption (5mA) and 190mA working current
• Selectable high-level or low-level trigger via onboard jumper
• Subminiature two-way optical coupling for strong anti-interference and stable performance
• LED indicators for power and relay activation status
• Compatible with 12V microcontrollers (Arduino AVR, PIC, ARM, etc.)
• Genuine Songle relay, fast shipping from Zbotic

Applications and Use Cases

• Switching DC motors, solenoids or pumps in robotics and automation projects
• Power failure protection circuits in home automation setups
• Automotive electronics control for lights, fans or auxiliary devices
• Industrial control panels requiring reliable high-current switching
• Integration with 12V alarm systems and security equipment
• DIY electronics projects where optical isolation prevents signal noise

How to Use Songle Single-channel 12V 30A Relay Module

Connect a 12V DC supply to the VCC and GND pins, then choose high-level or low-level trigger by placing the jumper accordingly. Wire your microcontroller’s control pin to the IN input (common ground required), and connect your load between COM and NO (or NC) terminals. Power on the module and drive the control pin to the selected trigger level to activate the relay.

Why Buy from Zbotic?

• Genuine Products: All items sourced from authorized distributors
• Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
• Free Shipping: Free delivery on qualifying orders
• COD Available: Cash on Delivery, UPI, cards, net banking
• Technical Support: Expert help for setup and troubleshooting
• Easy Returns: Hassle-free replacement for defective products

Frequently Asked Questions

What is the maximum load current this relay can handle?

This Songle relay module can switch DC loads up to 30A at 12V, making it suitable for high-current applications like motors and pumps.

Can I drive this relay directly from an Arduino?

Yes. Ensure your Arduino shares a common ground with the relay module’s GND, supply the module with 12V on VCC, and connect the Arduino digital pin to the IN input. Select the trigger level via the jumper.

How do I switch between high-level and low-level triggering?

Simply move the onboard jumper to the “HIGH” position for activation at 12V or to “LOW” for activation at ground. This allows flexible interfacing with different control signals.

Related Articles:

IoT Gateway Design: Raspberry Pi Multi-Protocol Hub

Table of Contents What is an IoT Gateway Raspberry Pi as Gateway Hardware Multi-Protocol Support Edge Processing on...

Read More →

Blynk 2.0 with ESP32: Cloud Dashboard for IoT Projects

If you've been building IoT projects with ESP32, you've probably heard about Blynk 2.0 ESP32 cloud dashboard —...

Read More →

ESP32 Mesh Network: ESP-MESH for Large Sensor Arrays

When your IoT project outgrows a simple star network and you need sensors deployed across a wide area...

Read More →