S20 with socket and plug rotated to allow clearance for pipework running below socket. Now we have a perfectly fitting S20 with switch and LED exposed, instead of hidden by plug cable.
Take out three screws from S20 body, take out two screws holding PC board, rotate plug/socket, redress wiring, screw together again. Now we have an S20 fit for purpose. Only missing bit is an RF version. Please can we have an S20 RF.