A manually operated switch assembly is disclosed. The switch assembly includes a housing, a switch mechanism, and an actuator assembly. The switch mechanism is housed within the housing and is configured to open or close a circuit upon actuation. The actuator assembly is shiftably supported by the housing and generally includes a depressible actuator and a stability element. The actuator presents an actuator length and serves to actuate the switch mechanism when depressed. The stability element is configured to ensure that the actuator moves substantially uniformly along the actuator length when the actuator is depressed such that actuation of the switch mechanism is facilitated regardless of where the actuator is depressed along the actuator length. The switch assembly may be waterproofed, and be formed, at least in part, by a curable liquid sealant supplied to the switch assembly from a single fluid source.