Abstract: A contactless control system for a pump monitoring device provides TEST and SILENCE functionality without penetrating a weather-resistant enclosure. A printed-circuit board within the enclosure carries a planar spiral transmit coil on one face and at least one planar receive coil on the opposite face, arranged to form a coupled resonant metal detector. The coils operate at a frequency, optionally a carrier frequency gated at a lower frequency, with optional ferrite material to increase magnetic field density through the enclosure wall. Two spatially separated receive coils may be wired in opposition to reject common-mode noise. Placement of a metallic object adjacent to the exterior wall produces a proximity signal that toggles the system between test and silence modes. The system is suitable for grinder pumps, septic pumps, and lift stations, and eliminates mechanical switches, enclosure penetrations, and sealing gaskets while reducing installation cost and improving reliability in outdoor environments.