Reverse Osmosis SMPS Adapters work on • Wider AC input range from 140VAC to 300VAC makes it ideally suitable for different power conditions. The SMPS Adapters are protected against over load, short circuit, over voltage and over temperature. The SMPS Adapters work under low voltages and protects high voltage where linear fails. Reverse Osmosis SMPS Adapters has a compact size and is a light weight device.