IE-8MD SKU IE-8MD-249 Selective Call Main Handset for 2 Doors, Up To 6 Rooms Please log in to see price or purchase this item Request an account Line Comment Special Price Features:Selective Call or All Call between handsetsSimple 4 conductor wiring between handsetsTwo doors with selective door releaseExternal doorbell can be addedAC or DC powered (12~16V AC or 12~18V DC)