🌡️ HiLetgo Temperature Controller Thermostat: Advanced One Channel Test, Measure & Inspect Device Review

You won't find an instruction manual but you will find this temperature relay/controller if you search the web for W1209. Most important: After connecting the 12V source and grounding, the relay terminals K0 and K1 open or close depending on whether the relay is active (red LED lit) or not which are switched on/off by the relay.It can be configured to that it turns on when the maximum temperature is reached (for cooling) or when the minimum temperature is reached.You can use two of these to…

I have a home build cnc router cabinet. There's a compartment for a computer, but there's little airflow inside. I noticed the other day that the temperature inside the case was quite high and may have contributed to the recent hard drive failure. I wanted to add a fan to circulate the air, but since the computer goes to sleep and doesn't generate much heat when not in use, I didn't want something running all the time. With this jig and a 12V fan, I was able to set it up so that the fan only…

I bought 2 of these from different sellers but they were exactly the same. There were no instructions and it took some time to figure out the wiring. The first ones I got in testing worked fine, but when they were plugged in all the time (like testing) the little CPU chip burned out. This happened on both devices. I then bought another set from a different supplier thinking I could get better results. Not me. The second set I received had the same problem. On the first unit, when the 12V+ wire…