Twidec/Output Single Phase SSR Solid State Relay 40A 3-32V DC to 24-480V AC SSR-40DA

Using to switch on the power supply for the spindle motor on my small cnc. I had it plugged into a long extension cord as had problems with the relay not having enough power to maintain the switch path. That's my fault not the relay. When plugged into the outlet directly there where no issues

This works and does exactly as it states. Seller was quick to answer.

The media could not be loaded.  I bought 12 to control the temperature in the barrel of a plastic extrusion machine. They are controlled by a PID that generates pulse signals of 5V. Look the video!

I was going to use good old mechanical relay but these are so much safer and better. Put them in series with driveway heating Mats and use low voltage “sprinkler” wiring to turn each section on. Will buy more for other projects

It's a pretty good solid-state relay from what I can tell. It will pump 38amps through a resistance element at 240V with no real complaints. It needs properly heat sink and active cooling to ensure it doesn't overheat at high amps. All of this is a 5-star performance as expected. It would be a 4-star product because there's no specifications or datasheet available.It will not turn on at 3VDC as stated on the label. It took me a lot of troubleshooting to identify this as the problem in a reasonably complex wiring setup. The LED indicator light will turn on but very little to no current will pass until you get to 3.6VDC. This means the GPIO pins on a Raspberry Pi can not directly control this relay. You will need an additional subcircuit to boost the voltage or to use a different relay.The other review that says this requires a lot of Amps to trigger is incorrect or has a defective SSR. The current draw when the relay triggers at 3.6VDC is 6.4mA

Driving directly from a Raspberry Pi GPIO port will not turn this SSR completely on. It seems that it will turn on for half the cycle but not the other. Driving with a higher voltage fixes the problem. I just happened to have an opto-isolated 12VDC output available and that works just fine.Be aware that if you are controlling this from a microcontroller you might need to boost the output voltage up a bit first.

Never worked out of the box. Don’t waste your money.

This supposedly brand new SS Relay arrived with scratches all over the clear plastic cover. It also has a very strong smell like very cheap perfume. I have not hooked it up to test it yet. If it fails, I will lower the rating from 3 to 1.

you cant run this on little amerpage as I was told.. your probably going to need least 5 amps of current to power it.. don't be thinking 3.3v at 1 amp or less will power it...at 24volts 4amps could not power it... but powered directly to a car battery 12 volts and whatever the current draw it needs it draws to activate then it works.. but if you want something with Milliamps look for ones that work for raspberry pi and stat 3v to 36v that style will work

Whatever else anyone says on here these little things can be switched on and off from something as low voltage as an arduino/pi. LED indicator is great and switching speed is amazing. Recommend a good heat sink for high amperage. One of the few products I've been impressed enough to review.

Best price for a decent ssrAt 5vdc input unit takes 9 ma. To triggerWell damped and output smooth. Uses zero crossing technology. Leakage at 120v is about 2ma

I like the dwsign and the feel of this unit, it feels very solid well built, I have started experimenting with it, I have temporary installed in a metal box, with a heath sync and cooling fam from my old PC, it seems to keep it cool