12V 2 Channel Relay Module With Optocoupler
The triggering of 2 Road/Channel Relay Module is reliable, more stable. The double FR 4 circuit board design, high-end SMT process. It has power and relay operation instructions. Relays terminals (C, NC, NO) are accessible through screw terminals which makes wiring up the board very easy. The inputs of the 2 Channel 12V Relay Module are isolated to protect any delicate control circuitry.
12V 2 Channel Relay Module With Optocoupler
Available:In Stock
- Product SKU: KG126
₹ 171
₹ 229
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Specification
Description
2 Road/Channel Relay Module Kit is used a genuine high-quality DC12V relay and SMD opto-isolator supporting high/low-level trigger, widely apply to control various AC/DC appliances, and other devices with large current. It can be high or low by a jumper setting trigger. This Interface design is humane, all interfaces can be connected directly via terminal wiring leads, very convenientThe triggering of 2 Road/Channel Relay Module is reliable, more stable. The double FR 4 circuit board design, high-end SMT process. It has power and relay operation instructions. Relays terminals (C, NC, NO) are accessible through screw terminals which makes wiring up the board very easy. The inputs of the 2 Channel 12V Relay Module are isolated to protect any delicate control circuitry.
Features
- Equipped with a screwed terminal plate and fixed bolt holes on both sides for easy installation.
- The LCD Keypad shield is developed for Arduino compatible boards, to provide a user-friendly interface that allows users to go through the menu, make selections, etc.
- It consists of a 1602 white character blue backlight LCD.
- The keypad consists of 6 keys select, up, right, down, left, and reset.
- To save the digital IO pins, the keypad interface only uses one ADC channel.
- The key value is read out through a 5 stage voltage divider.
Module interface:
The positive (according to the relay voltage VCC: connect power supply)
GND: connect power negative
IN1: relay module (effective) high-level trigger signal trigger end
IN2: relay module (effective) high-level trigger signal trigger end
GND: connect power negative
IN1: relay module (effective) high-level trigger signal trigger end
IN2: relay module (effective) high-level trigger signal trigger end
Meaning of High level and Low-level
- High-level trigger refers to using the anode voltage at the VCC connection way of a trigger and triggers the end when the trigger side has a positive voltage or to trigger voltage when the relay is off.
- Low-level trigger refers to using the negative voltage at the GND connection way of a trigger and triggers the end when the trigger side has 0 v low voltage or voltage to can trigger, the relay is off.
Technical Details
- Channel : 2
- Trigger Voltage (VDC) : 12
- Switching Voltage (VAC) : 250@10A
- Switching Voltage (VDC) : 30@10A
- Trigger Current (mA) : 20
Physical Attributes
- Length × Width × Height(mm) : 50 × 40 × 20
- Weight (gm) : 28
Integration with Arduino

Sample Code
Integration with Raspberry Pi

Sample Code
Dual-Channel Relay Module Basic Troubleshooting
If either of the relays does not turn on:
- The contacts might be welded due to overcurrent/arcing. Shaking the module firmly might help unstick the contacts
- The driver circuitry might have been damaged due to overvoltage.
- Input polarity might be incorrect.
- Jumper might not have been moved to the correct position
Applications
- Switching mains loads
- Home automation
- Battery backup
- High current load switching