SIZE RANGE:DN 50 TO DN 200,High protection against external magnetic fields,Mineral glass lens,Sealed register (IP68 copper/glass) to prevent condensation, Pre-equipped for reed switch (DN 50÷100mm 1P=100L / DN 125÷200mm 1P=1000L) or static pulse emitter (DN 50÷100mm 1P=10L / DN 125÷200mm 1P=100L)