You are buying a Siemens Sinaut 6NH9821-0BC12  , the unit is sold with 6 months warranty

SINAUT ST7, LTOP2 DOUBLE LINE TRANSFORMER WITH TWO OVERVOLTAGE PROTECTION MODULES OPM, FOR APPLICATION AT THE START OR AT THE END OF A 4-WIRE-CABLE OR A 2-WIRE-TAPPING POINT

UPS Overnight service is available in US and Canada, 2nd day worldwide (if available)