As an Amazon Associate, we earn from qualifying purchases. Home » United Automation » ZAX27A Phase & burst firing control mod ZAX27A Phase & burst firing control mod ZAX27A United Automation . ZAX27A Attributes Brand name, Manufacturer name, ManufacturerUnited Automation Distributor offers SellerSKUMOQIn stockMultiplePrices RS Components48936264 RS Delivers489-362611