<p>-Overload protection<br><br>-Overheating protection<br><br>-Short circuit protection<br><br>-Efficient and smart<br><br>-Precision voltage<br><br>-Precise input voltage selection according to the country where it is being used<br><br>-Suitable for Water dispenser, priter rice cooker, fan fax machine, air machine, computer<br><br>-Select proper input voltage switch at the back of the. Transformer<br><br>-Connect the converter onto a power socket. Insert your appliance plug into the multi socket on the transformer &amp; turn power on<br><br>-Purely use for AC output with all types of appliances rated 0-500 watts<br><br>-Switch on AC 117V: Input 110V/120V, Output AC 220V/240V<br><br>-Switch on AC 230V: Input 220V/240V, Output AC 110V/120V<br><br>-AC 117V suit for using in: America, Canada, Japan, Brazil, Taiwan, Mexcio etc<br><br>-AC 230V suit for using in: China, European Union Countries, Middle East etc<br><br>-For indoor use only. Make sure correct voltage is selected before use</p> <p>-Overload protection<br><br>-Overheating protection<br><br>-Short circuit protection<br><br>-Efficient and smart</p> <p>no specific requirement .</p> <p>China</p>