Top Digital Current Differential Relay Reviews

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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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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Macurco TX-12-HS White Hydrogen Sulfide H2S (Line Voltage) Fixed Gas Detector Controller Transducer with White Housing

Output: fan relay, alarm relay and 4-20ma current loop.
Controls: buzzer, Digital display, latching relay, relay Delay, relay minimum runtime.
Mounts on a standard 4” x 4” electrical box.
5 a spdt fan relay controls starters of exhaust fans.

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Macurco TX-6-AM Ammonia NH3 Low Voltage Fixed Gas Detector Controller Transducer

Fan relay actuation: Selectable from 15 to 75 ppm Nh3.
Output: fan relay, alarm relay and 4-20ma current loop.
Controls: Digital display (0-100 ppm), buzzer, fan Delay, fan minimum runtime.
Mounts on a standard 4” x 4” electrical box.
5 a spdt fan relay controls starters of exhaust fans.

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Diode Check

... has a built-in 10 amp circuit breaker, the input current can be reversed to form a loop power supply, and it automatically trips when the current exceeds 20A, protecting the equipment and extending its life..
【Injector Tester & Injector Cleaner】CODIAG GT 101 Power Digital Tester has a DIY injector cleaning adapter kit, which supports DIY cleaning of injectors. When the fuel injector is driven to open and close, and the current shows a normal value, it means that the fuel injector is normal. If it does not move or the current display is abnormal, it means that the injector is damaged. When checking the injector for clogging, it can be cleaned by cleaning the pressurized tank with the injector..
【20ft Test Cord & Color Display & Torch】Car circuit tester with 20ft extension cord, powered by car battery or cigarette lighter, extension cable port extension provides excellent accessibility for testing along the vehicle. With a digital color display, you can clearly read the voltage and current data. Built-in flashlight and LED bi-color light make it easy to work even in dark or low light conditions..

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ANMBEST 2PCS 4 Channel 5V Relay Module with Optocoupler High or Low Level Trigger Expansion Board for Raspberry Pi Arduino

It is 4 Channel Isolated 5V 10A Relay Module, each relay can individually switch on/off by an opto-isolated digital input, Standard interface can be directly connected with microcontrollers and be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, DSP, etc., very convenient..
Equipped with high-current relay, maximum load: AC250V 10A, 15A 125VAC, DC30V 10A.
RELIABLE: Fault-tolerant design, even if the control line breaks, the relay will not move.
With optical coupling isolation, triggering more reliable, more stable..
EASY to INSTALL: Equipped with screwed terminal plate and fixed bolt holes(diameter: 3.1 mm) on both sides for easy installation..
High/Low level trigger can be selected by jumper. Very versatile, you can reverse the input logic with the jumper..

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AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development Board

【30VDC 250VAC Load】 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..
【High Level Trigger】The relay module is triggered by high level signal, which can be input from microcontroller IO..
【 3V/3.3V power relay module】- This Relay Board provides a single relay that can be controlled by any 3V/3.3V digital input from your microcontroller IO..
【Wide Application】- These 3v relay board works well with ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4/3.3V /NodeMCU/ ESP8266 module etc..
【Long Life】 - Fast response time less than 20ms and long lifetime up to 100,000 times snap action with diode freewheel protection..

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Hycency Thermostat Plug Temperature Controller with Timer Mode, Programmable Outlet Thermostat Set Differential Value to Keep Temperature in Desired Range

Powerful Programming: This thermostat plug has heating mode and cooling mode, and with timer function. you can program time, temperature, and week in combinations as you need. For example, set differential value to maintain the desired temp range: you set the differential value to 2℉, target temp 80℉, heating mode. The device will turn on at 80-2=78℉, and turn off at 80+2=82℉. Equivalent to setting a temp range of 78-82℉. Temp differential value range: 0-4℉ or 0-4℃..
Save Energy and Money: This thermostat outlet has powerful programming capabilities and can save about 30% energy consumption. thermostat saves energy costs on heating or cooling by adjusting the temperature..
Create Convenient Life: Plug and play, no installation or wiring. Remote control built-in temperature sensor for automatic monitoring of ambient temperature, and send the signal to the plug through 2.4G wireless RF technology. Programming on remote control, no need to unplug the socket. Perfect for some hard-to-reach power outlets..
Top Safety Protection: The Hycency wireless thermostat plug is made of flame retardant PC material and built-in child protection feature, its own relay control and fuse protection. Multiple protection ensures 100% security. Max current up to ....

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Female Led Relationship Guide: How to Be a Femdom and Have the Perfect Female Domination Domestic Discipline Marriage or Relationship

... has a built-in 10 amp circuit breaker, the input current can be reversed to form a loop power supply, and it automatically trips when the current exceeds 20A, protecting the equipment and extending its life..
【Injector Tester & Injector Cleaner】CODIAG GT 101 Power Digital Tester has a DIY injector cleaning adapter kit, which supports DIY cleaning of injectors. When the fuel injector is driven to open and close, and the current shows a normal value, it means that the fuel injector is normal. If it does not move or the current display is abnormal, it means that the injector is damaged. When checking the injector for clogging, it can be cleaned by cleaning the pressurized tank with the injector..
【20ft Test Cord & Color Display & Torch】Car circuit tester with 20ft extension cord, powered by car battery or cigarette lighter, extension cable port extension provides excellent accessibility for testing along the vehicle. With a digital color display, you can clearly read the voltage and current data. Built-in flashlight and LED bi-color light make it easy to work even in dark or low light conditions..

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Weewooday 15 Pieces 5V Relay Module 1- Channel Relay Control Boards with Optocoupler Isolation High and Low Level Trigger Expansion Board

Relay module: this relay board supports high and low level trigger and can be controlled by any 5V digital output of the microcontroller.
Parameter details: maximum load of normally open interface: AC 250v/ 10A, DC 30v/ 10A, trigger current is 5mA.
The 5v relay control board adopts SMD optocoupler isolation, which has strong driving ability and stable performance.
Practical design: with fault-tolerant design, the relay module will not operate even if the control line is disconnected.
All interfaces can be provided through directly connected terminal s since the humanized interface design, it is very convenient to use.
High compatibility: the relay module can be directly controlled by the 5V logic signal provided by the microcontroller, suitable for 8051, Raspberry Pi, PIC, DSP, ARM, AVR, MSP430, TTL logic, etc..
Wide application: this 5V relay board can be applied with Raspberry/ CNC machine/ ARM/ PIC/ AVR/ MCU/ PS4 and more.

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4pcs Temperature Controller Module with Case W1209 12V DC Micro Digital Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with Waterproof NTC Probe

【W1209 Features】The W1209 thermostat module controller has a sensor input, keys, LED display, and a relay.100% complete machine patch, wave soldering, stable performance, good consistency..
【Embedded CPU Chip】The XH-W1209 led display digital thermostat module embedded CPU chip (MCU), is more intelligent, lower power consumption.
Automatic power set memory, MCU built-in EEPROM memory unit..
【Temperature Controller Parameter】Temperature range: -50-110°C.
Control precision: 0.1 celsius.Input power (DC): 12V.
Output: 1 channel relay output, capacity: 10A.
【Waterproof NTC Probe】The NTC probe is waterproof and can control the temperature, allowing to control heating or cooling.(The wood laminate case is the clear plastic case. You need to tear the wood outside layer off carefully, the outside layer is very thin, which can protect the inside to prevent scratches.
And you need to assemble and install the case by yourself, it comes disassembled with tiny bolts and nuts.).
【Package Includes】4pcs W1209 12V DC digital temperature controller board with case.(Ps: The product is not assembled, if you need assembly instructions or if ....

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AEDIKO 4pcs Relay Module DC 5V Relay Switch 1 Channel Relay Board with Optocoupler Isolation Support High or Low Level Trigger

Fault-Tolerant Design: Fault Tolerant Design, Even if the Control Line is Broken, the Relay will not Operate.
All Interfaces of Relay can be Wired Out Through the Terminals Directly,Normally Open and Normally Closed.
Optocoupler Isolation:1 Channel Relay Board use Optocoupler Isolation that has Strong Driving Ability and Stable Performance ,The Isolation Circuit Prevent Damages to I / O Port by Relay Switch Current.
Jumper Design: The Relay Module has a Jumper That You Can Set Rather the Unit State Changes with High or Low Signal. Has Screw Terminals for Relay (NC,C,NO) and for Input.
Wide Application: DC 5V Relay Module Works Well with ARM /PIC /AVR /MCU/Raspberry/CNC Machine/ PS4 etc..

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Solid State Relay, 90 to 280VAC, 25A

Solid state relay module, long service life and high reliability, low drive voltage and current, widely used in many automatic control systems..
Model: XRE-1D4840 Solid State Relay 40A DC to AC..
Input voltage: 3-32V DC Output voltage: 24-480V AC.
Note: The current of this product is 40A for a long time. A large heat sink or fan need to be added..
Package Content: 2 x 40A Solid State Relay, ideal for automatic process control application, a must component for temperature controller and other machinery control system..

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