4チャネル5V 10Aリレーモジュール

Looking at the datasheet (which is littered with references to "+5V") and the photo (SRD-05VDC-SL-C relays) I was expecting a 5VDC relay module. I received a 12VDC module with exactly the same product code but SRD-12VDC relays. Luckily I WAS able to make 12V available in my circuit. The description has since been updated to avoid confusion (thanks RobotShop robots!). I can clarify "Control signal: 12V TTL level" - these relays require 12VDC VCC supply but the control signals (CH1..CH4) work fine at 5V (EG from Arduino) Well built, neat, works fine, great price, no complaints, just make sure you have 12VDC available for VCC. If you need 5V, look at other relay boards EG RB-Ite-04