Skip to content

The Best Serial Relay of 2022 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best Serial Relay of 2022. Check our ranking below.

2,902 (random num) Reviews Scanned

Rank No. #1
12V 4Ch DB9 RS232 Relay Board Remote Control UART Serial Port Switch 4 Channel Relay Module for Car Motor
  • EASY TO CONTROL: The remote control switch has "Read", "open", "close", "Self-locking" , click, interlock 6 commands, can satisfy most of the industrial control.
  • FEMALE INTERFACE: The 4 channel relay board has RS232 DB9 female interface, with compact design, easy to carry and store.
  • : This is 4 channel relay module, made of high quality meterial strong and , with good performance and long service life.
  • VOLTAGE RANGE: The relay module has DC 12V power supply (voltage range 9-13v), can meet your requirement.
  • PRODUCT PARAMETER: Standby current (all relays closed) 18MA, 1 channel relay open 50MA, 2 channel relays open 81MA, 3 channel relays open 110MA, 4 channel relays open 141MA.
Rank No. #2
NOYITO DC 5V 12V 24V 1-Channel RS232 Serial Port Control Relay Module Multi-Function Delay Timer USB PLC RS232 Computer Control Switch
  • Supply voltage: DC 5V 12V 24V ( 5 - 24V).
  • Communication chip: MAX232.
  • Communication protocol, format: Serial port 232 communication, the protocol is very simple, use the serial port debugging software to send the character type "A" relay to open, send the character type "a" relay to close.
  • Communication format: (9600, 8, NONE, 1).
  • Baud rate: 9600, 8 bits, no parity, 1 stop bit
Rank No. #3
R223C16 16-Channel Relay Board DB9 Relay Module Female Interface Serial Port Smart Module for Parallel Industrial Electronics
  • 【SIMPLE CONTROL】Simple operation, simple instruction, 8 working modes of opening, closing, inching, self-locking, interlocking, delay, full opening and full closing (8-byte instruction without delay mode)
  • 【LOW DELAY 】Relay board has the advantage of low delay, at command and 8-byte command. The two commands are recognized automatically without switching. The maximum delay under at command is 9999 seconds
  • 【EXCELLENT PERFORMANCE】This intelligent module uses 16 channel relay module, multi-channel control, RS232 DB9 female interface, convenient and practical, can let you have a good sense of experience, worthy of your trust
  • 【SPECIFICATION】Power Supply: DC 12V power supply (voltage range 9-13V), Standby Current: 18MA, Interface: RS232 DB9 female interface, Two Types Of Instructions: AT and 8-byte instructions. The two types of instructions are automatically recognized without switching., Maximum delay under AT command is 9999 seconds, Size: Approx. 172 x 65 x 19mm / 6.8 x 2.6 x 0.7in, Weight: 228 g / 8 oz(approx.)
  • 【APPLICATION】Relay board is widely used in elevator, automobile, automation equipment, subway, aviation, coal mine, military equipment (tank, missile, etc.), as long as it can be used in the place of automation, it can basically use relay
Rank No. #4
Fafeicy 2-Channel Serial Port Relay Module, RS232 UART Protocol DB9 Interface, Manual Operation, Relay Switch Board, Copper Contacts, Normally Open
  • 【High Quality】The onboard 2 relay is made of high quality plastic meterial, , which can be accessed extended 2‑way relay module, has good performance.
  • 【Easy to Operate】The serial control relay switch board has simple , most serial commands are single‑byte commands, can improve work efficiency, save time and energy.
  • 【Stability】The relay switch board has capacitor filter circuit, which has improved stability, with two‑channel, plus two expansion ports, low‑level output.
  • 【Feature】The 2 channel relay switch board is compact design, easy to carry and store, very practical in work, built to meet standard specification, can bring you more convenience.
  • 【Quality Assurance】The serial relay switch is manufactured under strict quality control and standard requirements, and has a high safety factor, so it can be used with confidence.
Rank No. #5
Global Caché GC-100-18R Network Adapter with 18-Inch Rack Mount Kit - Connects RS232 Serial, Relay, Infrared Devices and Smart Sensors to a Wired Ethernet
  • PROVIDES MORE CONNECTIVITY - The Global Caché GC-100-18R offers an easy connection for your network-based IR, Sony Control-S, RS232 serial, sensors, and relay contact closures.
  • OFFERS MORE CONTROL OPTIONS - The unit has 2 serial ports, 3 relay connections, and 6 independent IR output or sensor inputs. Conveniently switch on/off lights and contact closures with the GC-100-18R.
  • PROVIDES AN OPEN NETWORK-BASED SYSTEM - It supports TCP, DHCP, and HTTP protocols allowing you to configure and manage sensor devices from a single server without operator intervention.
  • INTEGRATES WITH AUTOMATED APPLIANCES SEAMLESSLY - The unit has an RJ-45 and 10 Base-T Ethernet for the network interface, which conforms with all types of Smart Controls and Monitoring environments.
  • WORKS WITH VARIOUS CONTROL SOFTWARE - Remotely control serial, relay, infrared devices and sensors via MyURemote, tin:b Software, TouchControl, Touch Squid, Worried Cate Mote, iRidium, and more!
Rank No. #6
DC 12V 4 Channel Relay Board, DB9 RS232 Remote Control UART Serial Port Switch for Car Motor 8.5 x 4.7 x 1.8cm
  • 【4 channel】 This is 4 channel relay module, 1 channel / 2 channel / 3 channel / 4 channel condition available.
  • 【DC 12V+DB9 】 This relay adopted DC 12V power supply (voltage range 9-13v). RS232 DB9 female interface.
  • 【fully function】 "Read", "open", "close", "Self-locking" , click, interlock 6 commands, meet your different purpose.
  • 【current】 Standby current (all relays closed) 18MA, 1 channel relay open 50MA, 2 channel relays open 81MA, 3 channel relays open 110MA, 4 channel relays open 141MA.
  • 【wide applications】 Four-channel serial port relays are often used in car kits and motor control, which can meet most industrial controls. Relay load voltage: DC 1-100V or AC85-265V, relay load current: maximum 10A. Dimensions: 90mmx47mmx19mm.
Rank No. #7
RS485 12V 1 Channel Relay Module MODBUS RTU serial multi-function relay module PLC Controller
  • Six Working Modes:open, close, inching, self-locking, interlocking, delay.
  • Two Command Control Mode :Under AT command,the maximum delay is 9999 seconds.Under MODBUS command,the maximum delay is 255 seconds.
  • Input:AT command can be input by serial HyperTerminal (serial assistant) Enter,MODBUS command can be input by serial HyperTerminal (serial assistant) or Modbus Poll.
  • Support Device:Under MODBUS command mode, it can support up to 32 devices in parallel.
  • Working Voltage & Current:The Working Voltage is DC 12V,Working Current is 11-13mA Standby, one relay turn on 44mA
Rank No. #8
Global Cachà GC-100-12 Network Adapter - Connects RS232 Serial, Relay, Infrared Devices and Smart Sensors to a Wired Ethernet (12-Inch)
  • CONNECTS WITH MORE AUTOMATED DEVICES - The Global Caché GC-100-12 provides an easy connection for network-based IR, RS232 serial, Sony Control-S, sensors, and relay contact closures.
  • CONTROLS VARIOUS ELECTRONIC DEVICES - It has 2 serial ports, 3 relay connections, and 6 independent IR outputs/sensor inputs. Conveniently switch on/off lights and contact closure with the GC-100-12.
  • OFFERS AN OPEN NETWORK-BASED SYSTEM - This network adapter supports TCP, DHCP, and HTTP protocols so you can configure and control diverse systems, e.g., entertainment and security.
  • PROVIDES CONVENIENT WIRED CONNECTIVITY - The GC-100-12 has an RJ-45 and 10 Base-T Ethernet for TCP/IP network interface. It integrates with all types of Smart Controls and Monitoring environments.
  • WORKS WITH POPULAR CONTROL SOFTWARE - You can also use various control softwares including Creston, Extron, and Dukane ConVA with the GC-100-12 to remotely control DVR/VCR, AV equipment, lighting, and even irrigation.
Rank No. #9
NOYITO 2-Channel Micro USB Relay Module USB Smart Control Switch USB Intelligent Control Switch (2-Channel Micro USB)
  • NOYITO 2-Channel Micro USB Relay Module is equipped with a stable USB to serial port chip and a microcontroller. It can use the serial port debugging software to send serial commands on the computer to control the opening and closing of the 2-channel relay.
  • Onboard high performance microcontroller chip, CH340 USB control chip.With power LED indicator and relay status LED.On-board 2-channel 5V, 10A/250VAC, 10A/30VDC relay, long relay life, can work 100,000 times continuously.
  • Module with overcurrent protection and relay diode freewheel protection.
  • NOYITO 8-Channel Micro USB Relay Module ASIN:B09RGTSHHW . NOYITO 4-Channel Micro USB Relay Module ASIN:B09RGVQXXT
  • NOYITO 5V 2-Channel Micro USB Relay Module User Manual, Documentation, Schematic https://1drv.ms/u/s!AlzQUCOyZQhKfnmId9Qnm2btrs8?e=38YgQq
SaleRank No. #10
JESSINIE USB Serial Port Control Relay Module Sturdy Durable Lightweight USB Relay Module USB Intelligent Control Switch Overcurrent Protection Intelligent Command Control Switch Intelligent Home
  • The LCUS-1 USB relay module is equipped with a USB to serial port chip with stable performance and a microcontroller. It can use serial port debugging software to send serial port instructions at the computer end to control the opening and closing of the 1-way relay.
  • Protection function: The relay module has overcurrent protection and relay diode freewheeling protection function
  • Relay: on-board 5V, 10A/250VAC, 10A/30VSC relay, with long service life and can be continuously closed for 100000 times
  • LED indicator: onboard power LED indicator and relay status LED indicator
  • Controller chip: on-board high-performance micro-control chip onboard CH340 USB control chip, without any driver, plug and play, easy to use

Last update on 2025-03-14 / Affiliate links / Images from Amazon Product Advertising API

How Do You Buy The Best Serial Relay?

Do you get stressed out thinking about shopping for a great Serial Relay? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching Serial Relay, which is why we have assembled a comprehensive list of the greatest Serial Relay available in the current market. We’ve also come up with a list of questions that you probably have yourself.

We’ve done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Serial Relay that you consider buying. Your questions might include the following:

  • Is it worth buying an Serial Relay?
  • What benefits are there with buying an Serial Relay?
  • What factors deserve consideration when shopping for an effective Serial Relay?
  • Why is it crucial to invest in any Serial Relay, much less the best one?
  • Which Serial Relay are good in the current market?
  • Where can you find information like this about Serial Relay?

We’re convinced that you likely have far more questions than just these regarding Serial Relay, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for Serial Relay, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible Serial Relay. Make sure that you are only using trustworthy and credible websites and sources.

We provide an Serial Relay buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Serial Relay currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of Serial Relay has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an Serial Relay?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your Serial Relay.
  5. Customer Ratings: Number ratings grade Serial Relay objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Serial Relay.
  7. Product Quality: You don’t always get what you pay for with an Serial Relay, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an Serial Relay is should be an indication of how long it will work out for you.

We always remember that maintaining Serial Relay information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding Serial Relay is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.

Related Post: