When the job calls for a PSU that's impressively efficient, you can't go wrong with this Phoenix Contact DIN rail power supply. It converts any voltage across its broad universal input range of 85 to 264V AC and 95 to 250V DC and delivers a consistent output of 12V DC. This makes it suitable for battery-run equipment in applications from building control to railway technology.
As the unit does this using a current-stabilising and efficiency-boosting switching regulator, you get a safe and stable way of powering your devices. Thanks to low power losses of less than 2.8W and efficiency of over 83%, it's a great shout if you're looking for a solution that's careful with energy use.

• Climactic class 3K3 approved per EN 60721, so considered fit for public spaces that have temperature regulation but no humidity control
• Can be used near moving machinery thanks to its shock and vibration resistance per IEC 60068-2
• Approved for rail applications per EN 50121-4
• Certified as low voltage according to LV directive 2006/95/EC and IEC 60950-1, so poses little risk to people and equipment
• IP20 rating means it's touch-proof and protected against objects larger than 12mm