Reviews Circuit Board Relay

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..

【Easy-to-use multi-function probe tester】The main functions of this power circuit probe tester include voltage and polarity test, continuity test, signal circuit test, current test, circuit breaker protection, relay test, injector test and cleaning, component activation and testing, poor ground testing, tracking and locating shorts, etc. It beeps to indicate the result while testing and is the most versatile and practical dedicated circuit repair test tool its users have ever had..
【Best Electrical Tester】This electrical tester can supply power to electrical components, with reverse connection protection circuit, it is an advanced test tool for positive and negative line judgment. It shortens the diagnostic time of all 6 to 40 volt vehicle electrical systems, and is suitable for DC 6-40v cars, motorcycles, trucks, buses, construction vehicles, ships, tractors, mining vehicles and other vehicles that use DC circuits..
【Quick Self Test & Relay Test & Circuit Breaker Protection】GODIAG GT101 circuit tester has quick self test function, which can ensure the tester is in good condition before use. The GT101 Probe Tester Kit can quickly detect whether t....

The RPi Relay Board (B) is an expansion board with 8-ch relays for Raspberry Pi.
It gives your Pi the ability to control high voltage products such as home appliances..
Standard Raspberry Pi 40PIN GPIO extension header, Supports Raspberry Pi A+/B+/2B/3B/3B+/4B and later versions, Jetson Nano.
High quality relays, loads up to 5A 250V AC or 5A 30V DC.
Photo coupling isolation, prevent interference from high voltage circuit.

Works for: For single 10 inch, 12 inch, 14 inch, 16 inch Fans(2 x 8 inch Fans, 2 x 10 Inch Fans, 2 x 12 Inch Fans, 2 x 14 Inch Fans).
To turn electric fan on at 185 degrees and shut off at 165 degrees.
Scorpion 12 volt Electric Fan Wiring Harness, Relay, Sending Unit & Circuit Breaker 12V.
The 40 Amp Relay Helps take the Load & Aids in Starting the Fan with less Amps Also includes an Overload Circuit Breaker.
Includes the Relay Wiring Harness with 350cm of Wire.Also included is an assortment of wiring connectors to help aid in installation.

Ⓞ Works for: 2 x 8 inch Fans 2 x 10 Inch Fans 2 x 12 Inch Fans 2 x 14 Inch Fans Single 8 Inch Fan Single 10 Inch Fan Single 12 Inch Fan Single 14 Inch Fan Single 16 Inch Fan (Two 16 inch fans, need 2 Relay Kits).
Ⓞ This kit includes a waterproof relay, 3/8" （or1/2"）NPT thermostatic switch (185* on / 165* off), and fuse block. For single fan setups. Perfect for your muscle car, 4x4, or hot rod!.
Ⓞ Scorpion 12 volt Electric Fan Wiring Harness, Relay, Sending Unit & Circuit Breaker 12V.
Ⓞ These are perfect to use to turn your Electric Cooling Fan on & off.
Ⓞ The 40 Amp Relay Helps take the Load & Aids in Starting the Fan with less Amps Also includes an Overload Circuit Breaker.

New 175~185 degree electric fan thermostat relay switch kit , for your cooling system， 12V 40 Amp 4 Pin Relay & Pigtail,3/8" and 1/2" pipe thread....
This kit includes everything you'll need to hook up to your fannding unit, relay switch, circuit breaker, terminals,wires and mounting screws..
This kit is set up to turn your electric fan on at 185 degrees and shut off at 175 degrees and will work with any 12 volt system ..
Fit : 260 265 273 283 289 302 305 307 318 326 327 330 340 347 350 351C 351M 351W 352 360 361 383 390 396 400 400M 402 406 413 426W 427 428 429 440 454....
Circuit breakers are manufactured with high requirements to greatly protect the safety of automotive system equipment. When the short circuit current....

【4 in 1 Multi-function Power Circuit Probe Tester】This automotive power circuit probe has multiple functions. It supports circuit voltage test & current detection, relay testing, circuit break finding, fuel injector cleaning and testing, etc. Working voltage range 6V-40V, support variety vehicles. This power circuit probe tools includes English instruction manual for your convenience!.
【Excellent Function & Quick Diagnostics】This automotive electrical system test tool is the perfect choice for automotive circuit probe tester. Unlike other circuit testers that require you to use a variety of tools to troubleshoot electrical system problem, our circuit testers are perfectly capable of performing multiple types of services such as continuity testing, component activation, fuse test, checking bad ground indicator, detect voltage and current, positive and negative power supply..
【Positive and negative power supply】When the vehicle's headlights, turn signals, lift windows, sunroofs and other functions fail, our power circuit probe kit can output positive and negative power to check whether circuit components are normal, and can also perform continuity checks and resistance checks. Through these checks and diagnoses whether the path of the car cir....

Keen Temperature Control: To turn electric fan on at 185 degrees and shut off at 165 degrees..
Used widely: For10 inch, 12 inch, 14 inch, 16 inch Fans.
2 x 8 inch Fans, 2 x 10 Inch Fans, 2 x 12 Inch Fans, 2 x 14 Inch Fans..
The 40 Amp Relay Helps take the Load & Aids in Starting the Fan with less Amps, Also including an Overload Circuit Breaker..
Scorpion 12 volt Electric Fan Wiring Harness, Relay, Sending Unit & Circuit Breaker 12V..
Including the Relay Wiring Harness with 350cm of Wire and an assortment of wiring connectors to help aid in installation..