ACI 4420 HH alternative are ACi 4420 H or ACi 4410 HH 412 FH R2E220-AB06-05 6314/17 HTU R2E220-AB08-12-125W-115VAC - obsolete alternative is R2E220RA3801 A4E350-AA06-23 R2D225-AV02-11 - OEM/ alternative R2D225-AV02-14 R2D220-AA24-19 (OEM) R2D250-AB02-15 W2D250-ED26-12 A2D250-AD26-05 - alternative A2D250AA0202 614F W1G200HH 0152 R2D225-AV02-14 R2E190-AE77-05 (OBSOLETE REPLACED BY R2E190RA2605) 4414 M 4214/12H - obsolete replaced by 4414 /12 M