PiFace Relay Extra [discontinued] _RPI_CAB_AUDIO see the resources section at

see the resources section at the foot of this page for more information

Standard HID (Human Interface Device) compliant: No need to install any drivers

The super-villain emerges from the grand entrance in a wicked

or when a sensor goes off

There's a few buttons and LEDs as well for basic control and configuration

PiFace Relay Extra [discontinued] _RPI_CAB_AUDIO see the resources section atThe PiFace Relay Extra plugs into the Extra port on PiFace Relay+ and adds 4 additional relays! It's controlled by the same library and command structure. Alternatively you can plug the PiFace Relay Extra straight into a breadboard and control the relays directly. Note: The PiFace Relay Extra requires a PiFace Relay+ board to work your Raspberry Pi. Features 4 onboard relays (Max switching values: 1A 20V) 4 indicator LEDs 4 GPIO Easy to use software