Feeder for Televes H30/H30FLEX 593203 meter With this external power supply we can feed our H30 or H30FLEX field meter at any time. It does not matter where you are, since it comes equipped with different plugs that will adapt to the different electrical installations (EU, UK, US and AUS adapter). The feeder provides a supply voltage of 100-240VAC, with an output voltage of 12V. The feeder has a very small size and comes in black. Its protection index is IP20.