ReviewsRelay Module

Adafruit 1918 Analog UV Light Sensor Breakout - GUVA-S12SD

photosensitive resistance module's most sensitive to ambient light, commonly used to detect environment around the brightness of the light, or MCU trigger relay module, etc..
module in the environment light intensity than set threshold, output high level DO end, when the environment light intensity more than set threshold, the DO output low level.
the DO output can be directly connected to microcontroller, through single chip microcomputer to detect the high and low level, thus to detect the environment light intensity change.
the DO output can be directly driven our relay module, which can form a light-operated switch..

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Shuian 10 Pcs 3V Relay Power Switch Board, Songhe DC 1 Channel Optocoupler Relay, High Level Trigger for IOT ESP8266 Development Board.

The 3v Relay 1 Channel power switch module compatible with 10A 250VAC and 10A 30VDC load.4pcs * 2.5 mm Fixed Bolt Hole..
3V/3.3V power relay module supports photocoupler isolation control and dual power supply input ensure high anti-interference ability. Fast response time less than 20ms and long life time up to 100,000 times snap action with diode freewheel protection..
Equiped with high-current relay, AC250V 10A.
DC30V 10A,each relay has normally open and normally closed contact. Can be selected by jumper relay and TTL or ground..
Support dual power supply input ensure high anti-interference ability,high reliability of photoelectric isolation protection,The external connection uses the rotary crimping terminal, causes the wiring to be more solid..
You are free to select whether the relay and the signal share the same power supply or not by removing the jumper caps on the pins or not. It is recommended to share the same power supply, because that is more convenient for using..

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Valefod DC 5V Relay Module 1-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger, Pack of 10

【Control Devices】The 1-channel relay module uses genuine high quality DC5V relay and SMD opto-isolator supporting high/low level trigger, widely apply to control various AC/DC appliances, and other devices with large current..
【Load Range】NO(Normally open) maximum load < AC 250V/10A, < DC 30V/10A. Trigger current of opto-isolator: 5mA..
【Fault-tolerant Design】The relay will not operate even if the control line is disconnected..
【Universal Interface】Equipped with screwed terminal plate and fixed bolt holes(diameter: 3.1 mm) on both sides for easy installation..
【High Compatibility】The relay module can be controlled directly by 5V logic signals from microcontroller(8051, AVR, PIC, DSP, ARM, Raspberry Pi, MSP430, TTL logic etc).

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NOYITO 2-Channel 5V Computer USB Control Switch Relay Module Drive-free relay module Plug and Play Suitable for PC Smart Controller

The module uses HID technology, without any driver, plug and play. Support WIN7,10, XP 32-bit, 64-bit system, easy to use simple..
Onboard square USB interface, stable connection.
use of high-performance USB control chip.
use dedicated relay driver chip ULN2803, relay work more stable.
Power outlet and terminal, two access power mode convenient and flexible. After connecting the power, even if the computer shut down or USB from the computer pull out, the relay can also maintain the set state..
【NOTE: The 1-Channel 2-Channel module does not require an external power supply. 4-Channel 8-Channel modules require an external module power supply. 】PCB size: 56.5mm * 40.6mm, fixed hole size: 3mm, fixed hole center moment: 52.2mm * 36.6mm..

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Wifi Relay Module, 5V ESP8266 Dual Channel WiFi Relay Module IOT Smart Home Phone APP Remote Switch

2 WORKING MODES---Mode 1: The phone is directly installed on the WiFi module.
Mode 2: Equipped with a mobile phone and WiFi module on the router.
Additional features: It can also be used as a USB relay when the ESP-01 is pulled out.
TRANSMISSION DISTANCE---In an open environment, when the mobile phone is installed on the WiFi module, the maximum stable transmission distance is 100M. When the WiFi module and the mobile phone are simultaneously carried on the router, the transmission distance depends on the signal strength of the router.
SMARTCONGIG TECHNOLOGY---Use smartcongig technology to complete the account and password configuration on the APP ESP-01 WiFi module on the mobile phone, and configure the username and password memory functions.
SHORT RESPONSE TIME---On-board 5V,10A250V AC 10AV30V DC relay, which can continuously pull 100,000 times, with diode discharge protection and short response time. Onboard ESP-01 WiFi module and high performance microprocessor STM8S103.
OTHER EQUIPMENT---Board mode selection and real-time working status indicator. Reserved UART debug interface and STM8 SWIM program download interface.

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Fafeicy 12-Channel DC12-36V PLC Signal Amplifier Board Isolation Relay Module Amplifier Board with NPN Input PNP Output

Protection function: The relay can effectively avoid system instability caused by mutual interference, effectively protect the output node of the PLC, ensure the normal transmission of the signal, and thereby protect the relay..
Uses: The relay module can be used to protect the PLC internal relays, which can directly replace traditional relays, reducing maintenance time and cost.
Stable performance: The signal amplifier is made of high-quality electronic components with stable and reliable performance..
Easy to install: It is recommended to design to make drilling and module installation more convenient..
After-sales service: We strive to provide you with the highest quality product and the best customer experience, if you're not entirely satisfied, please just feel free to contact us at any time..

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5v Relay Board Relay Module 1 Channel Opto-Isolated High or Low Level Trigger

【1 Channel Relay Module】- This Relay Board provides a single relay that can be controlled by any 5V digital output from your microcontroller..
【Main Specification】- Peak Load of NO Connector: AC125~250V/10A, DC28~30V/10A.
【Adopted SMD Optocoupler Isolation】- The isolation circuit prevent damages to I / O port by relay switch current..
【Wide Application】- These 5v relay board works well with ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4 etc..
【Humanization Design On Interfaces】- All interfaces can be directly wired out through the terminals..

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3V Relay Power Switch Board, Icstation 1 Channel Optocoupler Module Opto Isolation High Level Trigger for IOT ESP8266 Development Board (Pack of 5)

【Optocoupler Isolator】 3V/3.3V power relay module supports photocoupler isolation control..
【High Level Trigger】The relay module is triggered by high level signal, which can be input from microcontroller IO..
【Jumper Caps】You are free to select whether the relay and the signal share the same power supply or not by removing the jumper caps on the pins or not. It is recommended to share the same power supply, because that is more convenient for using..
【Rotate Screw Terminals】 The external connection adopts a rotary crimping terminal, which makes the crimping more firm, and has fixed mounting holes for easy installation..
【30VDC 250VAC Load】The power switch is compatible with 10A 250VAC and 10A 30VDC load..

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MakerFocus Raspberry Pi Expansion Board 4 Channel Relay Board Module Power Relay Module for Raspberry Pi 4B/3 Model B+/Raspberry Pi 3/2 Model B (No Programming Required/Programmable)

The product operation guide can be obtained in the product guide and document. This Raspberry Pi expansion board supports Raspberry P.
The Relay Board gives your Raspberry Pi board the ability to control high voltage/high current devices, and easily makes normal home appliances become intelligent. Can be accessed programmatically or directly by shell. Up to 4 layers can be stacked..
Switch the I2C address of the device through the DIP switch on the circuit board to ensure that the four-layer module gets different addresses, thus avoiding the problem of address duplication..
The 4 Channel Relay uses high-quality relay modules combined with the most popular microcontroller technology to communicate with the Raspberry Pi. You can use mulitiple relay modules stacked together to add many channels.
The 4 Channel module is very fast, easy to install, and supports multi-language development, making it ideal for smart home projects.

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Youngneer 5v Relay Board Raspberry Arduino Relay Module 1 Channel Opto-Isolated High or Low Level Trigger

【1 Channel Relay Module】- This Relay Board provides a single relay that can be controlled by any 5V digital output from your microcontroller..
【Main Specification】- Peak Load of NO Connector: AC125~250V/10A, DC28~30V/10A.
【Adopted SMD Optocoupler Isolation】- The isolation circuit prevent damages to I / O port by relay switch current..
【Wide Application】- These 5v relay board works well with Arduino/ ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4 etc..
【Humanization Design On Interfaces】- All interfaces can be directly wired out through the terminals..

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AC100V~250V Infinite Cycle Delay Timer Timing Switch Relay Turn On Off Module 0.5s ~ 1000min Adjustable Time Delay Switch

【Simple Operation】Timer module enters into an infinite cycle mode when power on, and stops working automatically after the setting time, easy to....
【Adjustable】Relay timer has 0.5s~1000min wide adjustable time range, you can adjust the delay time both at "RUN" time and "STOP" time.
【Practical】The repeat cycle timer module can be used to control the reciprocating stroke, or repetitive power on and off for equipment and....
【Application】The delay timer module is suitable for timer operating equipment, machine repetitive test circuit and fish tank intermittent pump.
【Product Parameter】AC100V~250V voltage, delay timing timer relay switch can be used for 100V/110V/ 120V/ 127V/220V/230V/240V power.

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