Relay packs SC3504E5045 are used in conjunction with the 8000 and 7000 series SER8300 and SER7300 Room Controllers for Low or Line Voltage 2 or 4 pipes Fan Coil applications. The relay packs are specifically used for other applications such as reheat valves, fan coil, chiller, or heat or cool valve control. The relays rated supply voltage is 7V DC +/- 10% or 90 to 277V AC at 50 or 60Hz. The maximum output current for cool valve is 5A, for heat valve 10A, and for fan relay (< 0.5 hp) is 13A at < 277V AC The load type can be either Motor or Fan or Valve at a voltage of 90 to 277V AC at 50 or 60 Hz. The relay pack has 3 outputs for fan relays and 2 outputs for valve relays. It has also 4 inputs 1 for each of the following types: universal input, binary input, temperature sensor input for monitoring, and temperature sensor input for control. The relay package follows the following directives: 2004/108/EC - electromagnetic compatibility, 2006/95/EC - low voltage directive, and 1999/5/EC - R&TTE directive. The relay pack is certified for the following standards: FCC part 15 subpart B, ICES-003, UL 873, CSA C22.2 No 24, IEC 61326-1 2005, EN 60730-2-9, UL 61010-1 - ed. 3, IEC 61010-1 - ed. 3, CSC 61010-1 - ed. 3. The ambient air temperature for operation is between 32 and 122 oF. The ambient air temperature for storage is between -22 and 122 oF. The relative humidity for operating or storage is between 0 and 95% non condensing.