The ORRA radio remote receiver is an industrial large model. The models feature: 8 function relays + 1 "On/Off" relay or 16 function relays + 1 "On/Off" relay Voltage: ORRA****4 model 12 VDC (9 to 20 VDC) 24 VDC (20 to 28 VDC) ORRA****A model 24 VAC (+10%/-15%) 48 VAC (+10%/-15%) ORRA****B model 115 VAC (+10%/-15%) 230 VAC (+10%/-15%) Max. consumption: 260 mA for DC / 11 VA for AC Min. consumption: 23 mA for 12 VDC / 350 mW for 24 VDC