5V 4-Channel Relay Module with Optocoupler Isolation, Supports High and Low Level Trigger, Compatible with Arduino and Raspberry Pi for DIY Electronics Projects

Price: $7.97 - $7.01
(as of Oct 13, 2026 05:52:21 UTC – Details)

Product description

Product parameters

Working voltage: 24vThe use of genuine high-quality relayOptocoupler isolation, drive ability, stable performanceMulti-operating voltage optional, multi-output optionalHigh and low starting mode can be set.Power supply, work dual indicator lightInput and output terminals for easy wiring.Trigger Mode Configuration Description.The module has a trigger level selection terminal,each relay trigger level can be individually controlled,through the short-circuit cap to control.COM side is common, in the middle;When the LOW (L) terminal is connected to the common terminal,it is a low level trigger; when the HIGH (H) terminal is connected to the common terminal,it is a high level trigger.When there is no voltage at both ends of the relay coil,the relay has no action, and the common terminal is connected to the normally closed terminal;When there is voltage at both ends of the relay coil, the relay has action,and the common terminal is connected to the normally open terminal.

Raspberry Pi Relay Expansion Board Opto-isolated Relay for DIY Projects

24V working voltageOptocoupler isolation for stability

for Home Automation

High/low level trigger settingsGenuine relay componentsDual indicator lights for power and work statusEasy input/output terminal wiring Relay Module for Arduino

Multi-operating voltage optionsIndividually controlled relay trigger levelsHigh drive abilityCommon terminal configuration 24V Industrial Relay Board

Normally open and closed load accessShort-circuit cap controlVoltage-dependent relay actionLoad access with NO, COM, NC terminals High/Low Level Trigger Relay

Compatible with Arduino and Raspberry PiSuitable for DIY projectsReliable performanceMulti-output options

Product pin definition and function

DC +: positive power supply (according to the relay operating voltage selection) DC-: power supply ground IN or INX: control signal input NO or NOX: load access, normally open COM or COMX: load access, common NC or NCX: Load access, normally closed

Electronic OK Wire & Solder Wire

Add to Cart

Add to Cart

Add to Cart

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Customer Reviews

4.6 out of 5 stars 343

4.7 out of 5 stars 108

4.9 out of 5 stars 22

4.7 out of 5 stars 108

4.9 out of 5 stars 9

4.7 out of 5 stars 108

4.8 out of 5 stars 15

Model

P/N B-30-1000

P/N B-30-1000

XH-100

P/N B-30-1000

XH-100

P/N B-30-1000

XH-100

External Wire Diameter

0.56mm

0.56mm

0.5mm

0.56mm

0.8mm

0.56mm

0.3mm

Core Sectional Area

0.2mm²

0.2mm²

none

0.2mm²

none

0.2mm²

none

Material

PVC

PVC

solder

PVC

solder

PVC

solder

Wire Gauge

30AWG

30AWG

none

30AWG

none

30AWG

none

Temperature

105℃

113℃

183 ℃

107℃

183 ℃

112℃

183 ℃

**Versatile Compatibility**: Compatible with Arduino and Raspberry Pi, this 5V 4-Channel Relay Module is perfect for DIY electronics projects, making it ideal for hobbyists and tech enthusiasts looking to expand their projects with ease.
**Optocoupler Isolation for Stability**: Featuring optocoupler isolation, this module ensures stable performance and enhanced drive ability, providing reliable operation in various electronic applications.
**Flexible Trigger Modes**: Offers both high and low-level trigger options, easily configurable through short-circuit caps, allowing for tailored control based on your project’s specific needs.
**User-Friendly Design**: Equipped with dual indicator lights for power and operation status, along with clearly labeled input and output terminals, making wiring and setup straightforward and hassle-free.
**High-Quality Relay Components**: Built with genuine high-quality relays, ensuring durability and long-term reliability, this module is designed to handle demanding tasks in automated systems and smart home projects.