4pcs Relay Module DC 12V Relay Board 1 Channel with Optocoupler Isolation Support High or Low Level Trigger

Good quality, you can choose high and low trigger voltage. Terminals could be a bit bigger. Well-packed, individually in antistatic bags.

These relays work well with both high and low level inputs. One thing that lets them down is the quality of the screw terminal blocks - I have seen better.

I used this relay to drive a pond pump (240v) via a float switch (reed) driven by a 12 v supply… to control water level in a pond Works well

Do exactly when they should.

Contacts stick at 220v with less then half amp. On 4pack I used one 2times and the second one 10 times. Not a good product. Not buying again

Using these to switch ceiling lights on and off, work perfectly- thanks

Couldn't get the normally closed contacts to open when the coil is energised!!

Schön klein und macht einen vernünftigen Eindruck. Funktion ist gegeben.

Macht was es soll.

Macht was es soll alles OK

Relais funktioniert gut im Auto, warum man allerdings einen extra Kontakt anschließen muss, damit es überhaupt geht ist mir schleierhaft.

Wau...... das ging aber schnell. Gestern bestellt, heute schon da. Klasse Ware 1a. Dankeschön. Gerne 5⭐