Type and quantity of output relays Information, SVA 1+1+1 contacts NA BBB Technical sheet Open the product sheet.· Single-phase AC voltage controller · Measures its own supply voltage · Regulation: ±18% over the nominal value · Frequency control: 43..70 Hz · Continuous component control: 0..3 VDC · Timing 0.01 S..999.9 H · Multiple configurable parameters · Three configurable output relays · LCD graphic display