--- product_id: 146382371 title: "Optimal Shop 30W Universal AC/DC Adapter Switching Power Supply with 6 Selectable Adapter Tips for 3V to 12V Household Electronics and USB Power Charging Devices" brand: "optimal shop" price: "€ 19.76" currency: EUR in_stock: true reviews_count: 2 category: "Photo" url: https://www.desertcart.it/products/146382371-optimal-shop-30w-universal-ac-dc-adapter-switching-power-supply store_origin: IT region: Italy --- # Optimal Shop 30W Universal AC/DC Adapter Switching Power Supply with 6 Selectable Adapter Tips for 3V to 12V Household Electronics and USB Power Charging Devices **Brand:** optimal shop **Price:** € 19.76 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Optimal Shop 30W Universal AC/DC Adapter Switching Power Supply with 6 Selectable Adapter Tips for 3V to 12V Household Electronics and USB Power Charging Devices by optimal shop - **How much does it cost?** € 19.76 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/146382371-optimal-shop-30w-universal-ac-dc-adapter-switching-power-supply) ## Best For - optimal shop enthusiasts ## Why This Product - Trusted optimal shop brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Much Safety: With protection of over voltages, over current, short circuits and over temperature,bring you much safety. Multi Voltage replacement: 30W power adapter Suitable for for many kinds of small household electronics, like Router, Speaker, CCTV camera system, LED strips and other compatible devices. USB Port 5V2.1A: Can be used for charging any 5v devices, such as mobile phone, portable charger ect. Specifications: Adapter Input: AC 100V~240V 0.25A 50/60Hz, Adapter Output: 3V/4.5V/5V/6V/7.5V/9V/12V. DC Plug Polarity: inner Positive(+), outer Negative(-). The Polarity is not compatible ALL Devices. Some musical device requires inner Negative and outer positive (totally opposite), please check carefully before buying. Choose Correct Voltage before Powering： Small household appliances usually don't have circuit protection, if with the wrong voltage, may damage your device. It is important to choose the right voltage before powering your device. If your device use Alkaline battery AA or AAA , then each piece is 1.5V, 2 piece choose 3V, 3 piece choose 4.5V, 4 piece choose 6V, etc. For the voltage selector, you adjust it using the provided key. Tip Size: Tip1: 5.5x2.5mm Tip2: 5.0x2.1mm Tip3: 4.0x1.7mm Tip4: 3.5x1.35mm Tip5: 3.0*1.1mm Tip6: 2.5*0.7mm Package Included: 1x 30W universal power adapter 6 x Plugs 1 x Iron Sheet ## Features - This is a universal power supply for all your pedals, effects, battery chargers, wireless receivers, printers, games consoles and many other appliances. - NOTE: NOT compatible with laptop or other high power equipment, ie, NOT Compatible with Over 30W Devices and the Polarity could not be reversed. - Adapter Input: AC 100V~240V 0.25A 50/60Hz, Adapter Output: 3V/4.5V/5V/6V/7.5V/9V/12V. - One 5.0V 2.1A USB port, Perfect for USB Charging Smartphones and other Devices, the Cable Length is 115cm. - Six detachable DC output plugs make it fits 95% of AC/DC appliances, Such as 3V to 12V Household Electronics, Scales, Routers, Speakers, LED Strip Lights, CCTV camera system, USB Charging Camera, Smart phones and so on. Attention: DC Plug Polarity: inner Positive(+), outer Negative(-). ## Images ![Optimal Shop 30W Universal AC/DC Adapter Switching Power Supply with 6 Selectable Adapter Tips for 3V to 12V Household Electronics and USB Power Charging Devices - Image 1](https://images-na.ssl-images-amazon.com/images/I/41lb7AYiR6L.jpg) ![Optimal Shop 30W Universal AC/DC Adapter Switching Power Supply with 6 Selectable Adapter Tips for 3V to 12V Household Electronics and USB Power Charging Devices - Image 2](https://images-na.ssl-images-amazon.com/images/I/41JcfsVuTaL.jpg) ![Optimal Shop 30W Universal AC/DC Adapter Switching Power Supply with 6 Selectable Adapter Tips for 3V to 12V Household Electronics and USB Power Charging Devices - Image 3](https://images-na.ssl-images-amazon.com/images/I/41WPMhHFXwL.jpg) ![Optimal Shop 30W Universal AC/DC Adapter Switching Power Supply with 6 Selectable Adapter Tips for 3V to 12V Household Electronics and USB Power Charging Devices - Image 4](https://images-na.ssl-images-amazon.com/images/I/41I35ibkZBL.jpg) ![Optimal Shop 30W Universal AC/DC Adapter Switching Power Supply with 6 Selectable Adapter Tips for 3V to 12V Household Electronics and USB Power Charging Devices - Image 5](https://images-na.ssl-images-amazon.com/images/I/41wIn31mOVL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Adapter that fits just about any device and willpower it so no batteries *by K***C on May 9, 2019* This adapter appears to work on just about anything and has a plug-in for just about everything and you can select voltages and polarities just as easily. Super simple and basic adapter to save on batteries on any device you can think of. Appears to be very rugged and will be adorable and last basically forever ### ⭐⭐⭐⭐⭐ Different outputs *by J***Y on April 29, 2019* I bought it for my piano keyboard. 30W is great as I can use this power supply for different devices. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.it/products/146382371-optimal-shop-30w-universal-ac-dc-adapter-switching-power-supply](https://www.desertcart.it/products/146382371-optimal-shop-30w-universal-ac-dc-adapter-switching-power-supply) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-13*