This was formerly stated to be for the SainSmart relay modules, but it was later pointed out to me that ... 1 3 inch jumper wire 1 26 pin header (2x13) [This] will be more than enough. 4 12kΩ ¼ Watt ...
http://www.sainsmart.com/16-channel-12v-relay-module-for-pic-arm-avr-dsp-arduino-msp430-ttl-logic.html http://www.amazon.com/SainSmart-16-Channel-Relay-Module-Arduino ...