Product introduction:1. this module is in line with international safety standard, control areas and load area have the isolation groove;2. USES the loose quality goods relay;3. have power and relay operation instructions, and bright, disconnect the dawn;4. signal input signal, the public end and will often start conduction;5. can be used as a microcontroller development board module, can be used as a home appliance control;6. dc or ac signal control, can control 220 v ac load;7. and one often opened a normally closed contact;8. blue KF301 terminal line more convenient.Package include:5x 1 Channel Relay Module
T**N
Also works well with Raspberry Pi
All 5 of them work as intended. Thanks to the inbuilt transistors, the 'data' pin can directly connected to a Raspberry PI or Arduino GPIO port without requiring resistors or anything in between, as long as the GND port connected to ground and the VCC is connected to a 5V port on the RPI.The green LED turns on whenever there is power, which is quite useful to see where the problem is in your wiring in the case where things don't quite want to work.The switch screw holders are very small and not particularly strong (but average for these sorts of paorts) so I would not recommend to connect mains power to it. However I guess these boards where never intended to be used for mains in the first place (although the relais itself can easily handle that), since they don't come with optocouplers which would provide full electrical isolation between the micro controller and mains. However in voltage ranges that are not lethal, these ones are excellent.
D**N
Not Songle relay as shown in image.
The relay doesn't function as expected. I have an 8 channel Songle SRD 5VDC SLCthat works perfectly with my raspberry pi. The VCC is connected up to the pi 5V power and the data pin connected to a 3v3 GPIO.These do not work set up.Two of the 5 don't work at all even when triggered with 5V.
A**E
Excellent value
Excellent value it helped build my mini cupboard fridge. I used the relay with a arduino uno , nfc card reader/writer and a door cabin lock
T**E
Poor
Three of five stuck in the on position and were no good for mains use(lights)
M**S
Average product
It is very cheap but, Quality is not good. Also does not work with raspberry pi as it is 5V and not 3.3.
J**N
Very useful for DIY model railway projects.
These little relay modules are the perfect addition to a variety of projects. Simply connected to an output pin of a microcontroller such as an Arduino, PIC, ESP32, Picaxe etc. and their corresponding power supply, you have a ready made switch for an external circuit. The relay coil is 5V and rated at being able to switch up to 10A at 230V.
T**N
Avoid - cheaper brand sent than shown in picture, and only 1 sent not 5
1) Only received 1, despite the image and description showing 52) It's not even the same brand as shown, mine is "Tongling" which if you search you'll find lots of people having problems with them sticking open, failing etc.Will be returning for a refund.
L**I
Worked with 5V and 3.3V control signal
Just got them to play around with Arduino projects. Worked perfectly, even with a Nodemcu (esp8266) board, being controlled with 3.3V, which I didnt expect to work. Doesn’t have octocoupler protection but as long as an external power supply is being used, the Arduino board should be fine.
Trustpilot
1 month ago
3 days ago