Use MeritLine coupon code MLCKQ30TNL1
MeritLine has this Remote-Controlled Switch Socket 3-Pack for $19.99. Use the coupon code and the price drops to $15.99. The sockets feature a 3-button remote control that operates from up to 100 feet away and works through most walls, floors, and doors. Coupon expires after 200 uses. A 23A battery is required, but not included. Shipping is free.