1-Channel Relay Module – 12V (High and Low Level Trigger)
Specifications:
| Feature | Specification |
|---|---|
| Relay Type | Electromagnetic |
| Coil Voltage | 12V DC |
| Contact Rating | 10A 250VAC |
| Contact Rating | 10A 30VDC |
| Relay Model | JQC-3FF-S-Z (common) |
Original price was: 145৳ .130৳ Current price is: 130৳ .
15 in stock
15 in stock
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Description
🔌 1-Channel Relay Module – 12V
High & Low Level Trigger | 10A Switching | Industrial Control Module
📌 Overview
The 1-Channel 12V Relay Module (High & Low Level Trigger) is an electronic switching module designed to control high-voltage or high-current devices using a 12V control signal.
It allows microcontrollers and control systems to safely switch:
-
AC loads
-
DC loads
-
Motors
-
Pumps
-
Lights
-
Industrial equipment
This version supports both high-level and low-level triggering, offering flexible control.
⚡ Relay Specifications
| Feature | Specification |
|---|---|
| Relay Type | Electromagnetic |
| Coil Voltage | 12V DC |
| Contact Rating | 10A 250VAC |
| Contact Rating | 10A 30VDC |
| Relay Model | JQC-3FF-S-Z (common) |
🔌 Input Pin Configuration
| Pin | Function |
|---|---|
| VCC | 12V Power Supply |
| GND | Ground |
| IN | Control Signal |
| H/L | High/Low Trigger Selector (Jumper) |
🔄 High-Level vs Low-Level Trigger
🔹 High-Level Trigger
-
Relay activates when input = HIGH (12V)
🔹 Low-Level Trigger
-
Relay activates when input = LOW (0V)
You can select the mode using the onboard jumper.
🔌 Output Terminal
The relay has 3 screw terminals:
| Terminal | Function |
|---|---|
| COM | Common |
| NO | Normally Open |
| NC | Normally Closed |
Working:
Relay OFF:
-
COM connected to NC
Relay ON:
-
COM connected to NO
🧠 Working Principle
-
Control signal is applied to IN pin.
-
Driver transistor energizes relay coil.
-
Magnetic contact switches.
-
Connected device turns ON or OFF.
Provides electrical isolation between control and load circuits.
💡 Onboard Features
✔ 12V relay
✔ High/Low trigger jumper
✔ Transistor driver circuit
✔ Flyback diode protection
✔ Status LED indicator
✔ Screw terminal block
✔ Mounting holes
📐 Electrical Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 12V DC |
| Control Current | ~15–30mA |
| Switching Current | Up to 10A |
| Isolation | Mechanical isolation |
📏 Physical Specifications
-
PCB Color: Red
-
Compact rectangular design
-
4 mounting holes
-
Industrial-grade components
🎯 Advantages
✔ Flexible trigger mode
✔ Reliable switching
✔ High voltage handling
✔ Easy installation
✔ Suitable for automation
✔ Durable design
📦 Applications
-
Industrial automation
-
Motor control systems
-
Smart home automation
-
Pump control
-
Lighting systems
-
Power switching circuits
-
Security systems
🆚 5V Relay vs 12V Relay
| Feature | 5V Relay | 12V Relay |
|---|---|---|
| Coil Voltage | 5V | 12V |
| Suitable For | Arduino projects | Industrial systems |
| Power Supply | 5V | 12V |
| Stability | Good | Better for heavy systems |
🧑💻 Basic Example (Using 12V Controller)
If connected to microcontroller:
Customer Reviews
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