Quantity   Component name
1 × ESP12 ($1.80 each) http://www.aliexpress.com/item/2015-New-version-1PCS-ESP-12F-ESP-12E-upgrade-ESP8266-remote-serial-Port-WIFI-wireless-module/32612801998.html
1 × Relay Module ($2.00 each) http://www.ebay.com/itm/401090106647?_trksid=p2057872.m2749.l2649
1 × AMS1117 ($0.04 each) http://www.aliexpress.com/item/Free-Shipping-10PCS-Original-AMS1117-3-3-AMS1117-3-3V-AMS1117-LM1117-1117-Voltage-Regulator-We/32587752388.html?spm=2114.30010308.3.37.WTQ9SC&ws_ab_test=searchweb201556_9,searchweb201602_2_10017_10034_10021_507_10022_10020_10018_10019,searchweb201603_7&btsid=fa983465-e27c-4e7c-824d-79aa786faf3b
1 × 1K Resistor
1 × Electrical Duplex Outlet ($0.58 each) http://www.menards.com/main/electrical/light-switches-dimmers-outlets/electrical-outlets/legrand-15-amp-duplex-outlet/p-1444451105160.htm
1 × Electrical Wall Box ($0.48 each) http://www.menards.com/main/maintenance-repair-operations/lighting-electrical/wiring-connecting/electrical-boxes/pvc/legrand-slater-reg-18-0-cu-in-1-gang-nail-on-box/p-1444451218445-c-6431.htm?tid=-7756301870136647222
1 × Duplex Wall Plate ($0.22 each) http://www.menards.com/main/electrical/wall-plates/duplex-wall-plates/white-duplex-wall-plate/p-1444452547675-c-6477.htm
1 × Used cellphone charger ($0.00 each)
1 × Used computer power cable ($0.00 each)