I've found this relays online, but there is not much info on it. Anyone konw where else I can buy such relays with instructions?

http://www.sainsmart.com/sainsmart-...imer-switch-adjustable-module-clock-time.html

 

You're right the info is sparse. Try contacting Sainsmart directly I would guess.

 

Here is info on relays. I would think any relay with similar values will substitute.

http://www.parallax.com/sites/default/files/downloads/27115-Single-Relay-Board-Datasheet.pdf

Buy from EBAY:
http://www.ebay.com/itm/10pcs-SRU-12VDC-SL-C-Relay-SONGLE-PCB-Solder-type-/280993100703

 

Here is info on relays. I would think any relay with similar values will substitute.

http://www.parallax.com/sites/default/files/downloads/27115-Single-Relay-Board-Datasheet.pdf

Buy from EBAY:
http://www.ebay.com/itm/10pcs-SRU-12VDC-SL-C-Relay-SONGLE-PCB-Solder-type-/280993100703

I doubt that the OP meant the actual relay, more likely he was looking for info on how to control the whole PCB, but I could be wrong.

 

Here is info on relays. I would think any relay with similar values will substitute.

http://www.parallax.com/sites/default/files/downloads/27115-Single-Relay-Board-Datasheet.pdf

Buy from EBAY:
http://www.ebay.com/itm/10pcs-SRU-12VDC-SL-C-Relay-SONGLE-PCB-Solder-type-/280993100703

Not sure what the difference is but

http://www.ebay.co.uk/itm/5pcs-New-...SL-C-542-/221042547543?_trksid=p2054897.l4275

has the SRD version not SRU.

 

This ebay sell gets good feedback for SainSmart product.

Your link has a forum, but it isn't loading for me

 

What you really want?
1. Buy the relays? (bwilliams60 did for you already, I also find the same data from other site)
2. Are you going to use computer via RS-485 to control something?
3. Are you trying to find a 4 ports relay and controlled by the computer?
4. Are you trying to find a normal 4 ports relay to control but not from computer?

 

This ebay sell gets good feedback for SainSmart product.

Your link has a forum, but it isn't loading for me

It loaded for me but a search for this relay board returned nothing useful.