A keyless entry device includes a rear casing having a first surface
extending along a periphery of the rear casing member, an electronic
circuit located in the rear casing member and including comprising a
substrate and switching elements supported on the substrate, a front
casing including a second surface facing the first surface and extending
along a periphery of the rear casing member having button apertures
aligned with a switching element. A seal element of compressible elastic
material includes a peripheral flange comprising multiple protrusions
located between the first surface and the second surface, the protrusions
producing elastic preloaded contact between the front and rear casing
members when the device is assembled, and pedestals aligned with a button
aperture and a switching element. Button caps are aligned with a button
aperture and located above one of the pedestals.