A receiver for receiving radio frequency signals from a remote keyless entry system and another system includes a low noise amplifier for amplifying and increasing the range and sensitivity of the receiver, such that the receiver may receive signals at increased distances. A monobloc optical lens includes a rectangular surround and a central mirror-surface area. Septum monitoring may provide the ability to determine whether the septum is maintaining its ability to seal the reservoir against leakage. The vibration in the system and the force of the air flow can then knock the ice particles off of the condenser, resulting in reduced ice buildup.