Arduino 4 Relays Shield launched today!
The Arduino 4 Relays Shield is a novelty: it’s a solution for driving high power loads that cannot be controlled by Arduino's digital IOs.
The Shield features four relays and each of them provides 2 pole changeover contacts (NO= normally open: the contact is open when the relay is in off state, that is unpowered; and NC= normally closed: the contact is closed when the relay is in off
state, that is unpowered); the increased current limit of each output has been obtained by putting in parallel the 2 changeover contacts. There are four LEDs that indicate the on/off state of each of the relays.
The shield also has several TinkerKit input/output and communication interfaces. The creation of a Project or of a Prototype can be simplified by using a TinkerKit module.
The shield sports a plastic basement that insulates electrically the bottom side of the power connectors, thus
preventing accidental contacts and eliminating any risk of making short circuits or of coming in contact with the power part.
See more on the new Arduino 4 Relays shield here.