For GT-300 / SE-1200 Series ECG MachinesStep 1 Press the “mode” soft key towards the bottom left of the keyboard. Step 2 Cycle through the modes by pressing the “mode” soft key until the corresponding mode is on ‘auto’. None of the solutions work as intended? Please contact us with any additional questions Step 1 of 2 50% Name* First Last Company Name* Email* Phone* Service Request Type*Repair RequestTroubleShootingRMA RequestWarranty IssueProduct Serial Number* Sales Order Or Invoice Number* Describe Your Issue* Δ