Instruction: Rank the products A, B, C, ... based on their relevance to the provided query, and produce a ranked list with the most relevant product positioned at the top of the list.

Input:
Query: 20 amp smart switch
Product list:
A: Migro Outdoor Smart Wi-Fi Outlet Box, Heavy Duty 50A Resistive 240VAC 40A 10HP Pool Heater, Wireless Pump Control, Timer Switch, Compatible with Smart Phone, Alexa, Google Home, IFTTT UL Listed
B: Kasa Smart Dimmer Switch HS220P3, Single Pole, Needs Neutral Wire, 2.4GHz Wi-Fi Light Switch Works with Alexa and Google Home, UL Certified,, No Hub Required, 3-Pack
C: Suraielec WiFi Pool Timer, Outdoor Indoor Smart Switch, 40 AMP, 2HP, 120, 240, 277 VAC, Heavy Duty Pool Controller Light Timer Box for Pool Pump, Water Heater, Spa, Powerful Electrical Appliances
D: Smart Dimmer Switch, WiFi Smart Light Switch Work with Alexa and Google Home, Single-Pole, Remote Control, No Hub Required,Neutral Wire Required, Etl and Fcc Listed,3 Pack
Answer: D,C,A,B