---
product_id: 71083111
title: "SainSmart 16-Channel 9-36V USB Relay Module"
brand: "sainsmart"
price: "฿3545"
currency: THB
in_stock: true
category: "Sain Smart"
url: https://www.desertcart.co.th/products/71083111-sainsmart-16-channel-9-36v-usb-relay-module
store_origin: TH
region: Thailand
---

# Supports 9-36V DC power supply USB interface for seamless PC integration 16 SPDT relays for versatile control SainSmart 16-Channel 9-36V USB Relay Module

**Brand:** sainsmart
**Price:** ฿3545
**Availability:** ✅ In Stock

## Summary

> ⚡ Command Your Smart Space with 16 Channels of Power!

## Quick Answers

- **What is this?** SainSmart 16-Channel 9-36V USB Relay Module by sainsmart
- **How much does it cost?** ฿3545 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/71083111-sainsmart-16-channel-9-36v-usb-relay-module)

## Best For

- sainsmart enthusiasts

## Why This Product

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

## Key Features

- • **Robust & Reliable:** Opto-isolated design protects your system from electrical noise
- • **Plug & Play Control:** USB connectivity ensures easy setup and management
- • **Power Your Automation:** Handles up to 10A/250V for heavy-duty devices
- • **Expand Your Smart Home:** Perfect for robotics, home lighting, motors, and solenoid projects
- • **Visual Status Indicators:** Individual LEDs for each relay output keep you informed at a glance

## Overview

The SainSmart 16-Channel USB Relay Module is a high-performance, opto-isolated control board featuring 16 SPDT relays capable of switching up to 10A at 250V. Powered by a flexible 9-36V DC supply and controlled via USB, it’s ideal for advanced home automation, robotics, and electrical device management with real-time LED status indicators for each relay.

## Description

SPECIFICATION Maximum load: 10A/250V Power supply: DC 9V~36V LED for each relay output Power LED USB LED WHAT'S IN THE PACKAGE 1x 16-Channel USB Relay Module

## Features

- This is USB controlled relay opto-isolated board with 16 SPDT relays.
- You can use it for simple ON/OFF switching electrical devices - home lights, DC motors, solenoids and others.
- It can help you building projects like robotics and home automation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0793MZH2B |
| Best Sellers Rank | #227,012 in Automotive ( See Top 100 in Automotive ) #78 in Automotive Replacement Relay Control Module Relays |
| Brand Name | SainSmart |
| Coil Voltage | 36 Volts |
| Connector Type | Usb |
| Contact Current Rating | 10 Amps |
| Contact Material | Silver |
| Contact Type | Normally Open |
| Current Rating | 10 Amps |
| Customer Reviews | 3.6 3.6 out of 5 stars (42) |
| Manufacturer | SainSmart |
| Maximum Switching Current | 10 Amps |
| Maximum Switching Voltage | 36 Volts |
| Minimum Switching Voltage | 9 Volts |
| Mounting Type | PCB Mount |
| Operating Time | 0.5 Seconds |
| Operation Mode | Electrical |
| Part Number | USB Relay Module |
| Wattage | 90 watts |

## Product Details

- **Connector Type:** Usb
- **Contact Material:** Silver
- **Contact Type:** Normally Open
- **Current Rating:** 10 Amps
- **Mounting Type:** PCB Mount

## Images

![SainSmart 16-Channel 9-36V USB Relay Module - Image 1](https://m.media-amazon.com/images/I/71wb3DN51VL.jpg)

## Questions & Answers

**Q: Where can I download the software for this board ?**
A: Hi, you can download from this link:
http://s3.amazonaws.com/s3.image.smart/download/101-70-208/101-70-208.zip

**Q: is the ground pin of each channel connected together or each channel is totally isolated?**
A: Hi, the ground of the control terminals is connected together, and each channel at the input is completely isolated.

**Q: Why do the commands not work when input into a serial terminal connected to the com port assigned? using putty 9600bps 8n1 i have added \r\n**
A: Not sure what you entered there and if you have a proper serial port through the USB interface.
Note there are many bytes to fransfer including a checksum if I remember correctly.
(Did create some Python code which uses python usb)

**Q: Is it possible to expand this module to control more than 16 channels? If no, any other alternatives plz?**
A: You can use a RPI with for example 4 modules, but It's better using 8-Channel USB because it contains serial number, so you have the possibility to identifiy witch module you use. It isn't possible with 2 module 16 channels on a RPI.

## Frequently Bought Together

- SainSmart 16-Channel 9-36V USB Relay Module
- SainSmart USB Eight Channel Relay Board for Automation - 12 V
- SainSmart USB 4 Channel DC 12V Relay Module Automation for Arduino Raspberry Pi DSP AVR PIC ARM

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**Shop now:** [https://www.desertcart.co.th/products/71083111-sainsmart-16-channel-9-36v-usb-relay-module](https://www.desertcart.co.th/products/71083111-sainsmart-16-channel-9-36v-usb-relay-module)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-07-04*