One of them dies after a week of use. Not sure if they are made to be on 24 hours a day

I needed a latching relay for a project in my motorhome (changing the sliding step cover from open or closed to press-to-open/press-to-close). I chose this self-locking relay module as it was 12V like the system I was putting it into and had a relay output. However, I did find out one important limitation: the input trigger sits at about 5V, if you pull the input up to 12V it destroys the module! Since my input went from 12v to ground, I decided to use the HiLetgo Opto-input relay module (P/N 3-01-0342 for the 2 channel version) to buffer the input; used the relay output from the opto-relay module to close the trigger on the latching relay module. A little more wiring, but it protects the sensitive input!Hey HiLetgo manufacturer, how about making another version with an opto-input instead of the computer signal input?

Incorporating the Self-Locking Relay Module into my electronic projects has been a breeze. Its clear and well-labeled terminals facilitate effortless connections, minimizing the likelihood of errors during setup. The module supports both active low and active high trigger signals, allowing seamless integration with a variety of microcontrollers, sensors, and other input devices.I have successfully implemented this relay module in home automation projects to control lighting systems, motorized curtains, and other appliances. Its stable performance and low power consumption have proven to be ideal for creating energy-efficient solutions. Furthermore, in my robotic endeavors, the relay module has been instrumental in handling complex switching tasks, such as controlling multiple motors and actuators.Reliability is paramount in any electronic project, and the Self-Locking Relay Module has exceeded my expectations in this regard. Its durable components and solid-state design ensure consistent performance, minimizing the risk of mechanical failure or wear over extended periods of use.Moreover, the module's ability to handle both AC and DC loads further adds to its versatility. Whether dealing with resistive, inductive, or capacitive loads, this relay module has demonstrated exceptional reliability and transient suppression capabilities.In conclusion, the Self-Locking Relay Module has proven to be an invaluable asset in my technical endeavors. Its self-locking mechanism, ease of integration, and reliability make it an excellent choice for a wide range of electronic projects. Whether you are a hobbyist or a seasoned engineer, this relay module is a must-have component in your arsenal. Its versatility and performance will undoubtedly elevate the efficiency and functionality of your projects. Highly recommended!⭐⭐⭐⭐⭐ 5 out of five stars!Review of Self-Locking Relay Module: Versatile and Reliable Solution for Electronic ProjectsAs a technical enthusiast engaged in diverse electronic initiatives, I have determined the Self-Locking Relay Module to be an imperative and quite versatile aspect in my toolkit. Its fantastic performance, ease of integration, and robust design have appreciably better the efficiency and capability of my projects.The Self-Locking Relay Module's functionality revolves round its capacity to govern the switching of high-power circuits using low-electricity signals. Its compact shape issue and great creation make it appropriate for a extensive range of packages, from domestic automation and robotics to industrial control structures.One of the standout features of this relay module is its self-locking mechanism, which enables it to keep its state even after the manipulate sign is removed. This characteristic is particularly useful in situations in which a steady kingdom wishes to be maintained without non-stop power supply or input signal. Additionally, the module's bistable feature conserves power and reduces the risk of accidental switching.Incorporating the Self-Locking Relay Module into my digital projects has been a breeze. Its clear and properly-categorized terminals facilitate easy connections, minimizing the probability of mistakes at some point of setup. The module supports each energetic low and lively excessive trigger alerts, permitting seamless integration with quite a few microcontrollers, sensors, and other input devices.I actually have efficiently implemented this relay module in domestic automation projects to govern lighting fixtures systems, motorized curtains, and other appliances. Its stable performance and coffee power intake have tested to be ideal for growing electricity-efficient answers. Furthermore, in my robot endeavors, the relay module has been instrumental in coping with complex switching tasks, including controlling a couple of cars and actuators.Reliability is paramount in any electronic task, and the Self-Locking Relay Module has exceeded my expectancies in this regard. Its durable additives and stable-nation design ensure constant overall performance, minimizing the risk of mechanical failure or put on over prolonged periods of use.Moreover, the module's capability to handle both AC and DC masses in addition adds to its versatility. Whether managing resistive, inductive, or capacitive loads, this relay module has verified first rate reliability and transient suppression abilties.The Self-Locking Relay Module has established to be a useful asset in my technical endeavors. Its self-locking mechanism, ease of integration, and reliability make it an great desire for a wide variety of digital projects. Whether you're a hobbyist or a seasoned engineer, this relay module is a must-have thing on your arsenal. Its versatility and overall performance will absolutely increase the efficiency and capability of your tasks. Highly recommended!

These particular relay units were recommended to me as a temporary fix for a problem I'm having at work. I need to turn On/Off a couple of different color LEDs to indicated a change in status - problem is, the output of what I am attempting to monitor is a brief closure of a NO contact.This relay board operates on a rage of DC voltages - right now I'm powering it with a 9-volt battery, having connected a 9-volt battery connector to the power input terminal. The two LEDs are connected to the switching relay terminal, and to a different power source. So far this works as needed. Haven't had any issues with the module. My one and only comment/complaint would be that the two terminal blocks on this module are of poor quality - everything else is more than adequate. If I were to end up using these for something permanent rather than temporary - I would replace the terminal bocks - probably just soldering wires in their place. Other than that, I'm happy with my purchase.

This is an excellent little product once you figure out how to get it to work. It turns a momentary signal to a continuous signal.Unfortunately, there is scant documentation, other than in information that the vendor posts on Amazon. For me, at least, this was not enough to understand how it works, and I have no previous experience with relays to fall back on.It took me a few days to figure this out. Please see the attached (crude) diagram I made that explains:- The relay itself needs to receive power.- This power IS NOT transmitted through the relay. It's just to operate the relay's electronics and the actual mechanical switch inside (which you can hear turn on and off when you click the "test" button or use the switch port).- The OTHER END, where your "controlled device" connects to, needs it's own power source. This is the part that confused me, as I (naively) assumed that the 12v power source flowed in from one end, and out the other, and the relay was just acting as a fancy switch. This isn't the case.- The relay does "switch" power on and off - between the (+) and (-) terminals (or technically, the NO and COM terminals) when it's triggered. But these terminals need to be powered independently of the relay's power.Once I realized this, the relay worked perfectly. Hope it works for your needs.