The acrylic cast ensures that the circuit board is protected. The parts are fully covered in acrylic. Therefore the parts can not move and are fixed in place. This guarantees a high life expectancy.
The full body acrylic cast protects from dust and dirt e.g. when installed in a basement. The full body acrylic cast protects against heat and protects against coldness as acrylic is a perfect isolating material. E.g. when installed in extremely hot areas with outdoor temperature up to 50°C ( 122 °F) or in very cold temperatures down to -25°C (-13°F).
The acrylic cast ensures a very long product life. The most common cause of a malfunction in electronic devices is that they “blow” when the electricity heats up too much. The thick acrylic covering together with the vacuum prevents heat production. This “cooling” of the unit ensures a long life.