---
product_id: 29063444
title: "Puyu 2 Channel Relay Module / Expansion Board / Bi-directional Optocoupler Isolation / Low level triggered /24V"
brand: "puyu2013"
price: "฿2424"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/29063444-puyu-2-channel-relay-module-expansion-board-bi-directional-optocoupler
store_origin: TH
region: Thailand
---

# Puyu 2 Channel Relay Module / Expansion Board / Bi-directional Optocoupler Isolation / Low level triggered /24V

**Brand:** puyu2013
**Price:** ฿2424
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Puyu 2 Channel Relay Module / Expansion Board / Bi-directional Optocoupler Isolation / Low level triggered /24V by puyu2013
- **How much does it cost?** ฿2424 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/29063444-puyu-2-channel-relay-module-expansion-board-bi-directional-optocoupler)

## Best For

- puyu2013 enthusiasts

## Why This Product

- Trusted puyu2013 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Module Description
 fault-tolerant design, even if the control line is broken, the relay will not operate;
the power indicator (red), 2-way relay status indicator (blue)
7, interface design, user-friendly, all interfaces can be drawn through terminals connect directly, very convenient
has four fixed bolt hole for easy installation
Module interface
Module control terminal: 5-wire interface, all interfaces are terminal blocks, user-friendly wiring
1, DC +: external DC power supply negative (there is 5V, 12V and 24V modules to choose from)
2, DC-: an external DC power supply negative
VREF: optically isolated control end of the reference ground.
          If the high level control: This signal should be connected to the negative terminal of the power supply in the user control panel
          If the low-level control: This signal should be connected to the positive power supply in the user control panel
4, CH1-CH2: relay control interface,
          If VREF tied to power supply: This port is high (relative to VREF) relay
          VREF to the positive supply: This port is low (relative to VREF) relay

NO1 - NO2: relay normally open interface, the relay becomes vacant before the pull shorted with COM
COM1 - COM2: relay common interface
NC1 - NC2: Relay NC interface, the relay shorted together with COM, pull vacant

## Features

- the module uses genuine high-quality relay, normally open interface Maximum load: AC 250V/10A, DC 30V/10A
- with the industry's top quality ultra-compact bi-directional optocoupler isolation, anti-interference ability, stable performance; trigger current is only 3mA
- operating voltage have 5V, 12V, 24V are available; otherwise to 1, 2, 4, 8 modules to choose from; 4 user-selectable relay control level is high pull, can also be a low-level pull; module can be used directly with a current limiting resistor, the power of positive and negative control, you can use the microcontroller I / O port control
- module size: 5.0cm * 4.8m * 2.0cm (L * W * H)
- Note: isolated relay module is designed to adapt to the electromagnetic environment is relatively poor or relatively high signal occasions, if you want to achieve complete isolation effect, the power of the user control panel (the connection VERF reference power supply) power supply and relay module (DC + / DC-) should be distinguished If both of power, of less than completely isolated from the effects of the user can choose a more economical standard relay module. Relay outputs: 6-wire interface, all interfaces are terminal blocks, user-friendly wiring

## Images

![Puyu 2 Channel Relay Module / Expansion Board / Bi-directional Optocoupler Isolation / Low level triggered /24V - Image 1](https://images-na.ssl-images-amazon.com/images/I/61w9X2XkgML.jpg)
![Puyu 2 Channel Relay Module / Expansion Board / Bi-directional Optocoupler Isolation / Low level triggered /24V - Image 2](https://images-na.ssl-images-amazon.com/images/I/61s1Gfep0RL.jpg)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-27*