Sequent Microsystems has launched a $20 “4-Relay” add-on for the Raspberry Pi with four line-switching relays for loads of up to 10A and 250V. The cards can stack up to 8x high for 32 switched relays. Sequent Microsystems has won Kickstarter funding for a Raspberry Pi add-on card designed to switch multiple lights or appliances. […]

Source: LXer – Stackable Raspberry Pi add-on has four switched relays