The very cheap switches from Hong Kong Super Seller have just received an upgrade. My latest batch arrived the other day and as you can see in the photos, the solder terminals of the right switch contain red resin substance the base. My guess is that this will prevent the certain degree of melting found in the previous models of switches ( on the left ). In my experience wires had to be soldered carefuly and everything was fine, but this is a welcome improvement at no extra cost to us! Great…