Setup, External power, Hardware configuration – GAI-Tronics 226-003 S.M.A.R.T. Phones with Keypads User Manual

256-003 S.M.A.R.T. Phones with Keypads, 246-003 S.M.A.R.T. Phones with Keypads, 276-003 S.M.A.R.T. Phones with Keypads, 227-003 Auto-dial S.M.A.R.T. Phones, 247-003 Auto-dial S.M.A.R.T. Phones, 257-003 Auto-dial S.M.A.R.T. Phones, 277-003 Auto-dial S.M.A.R.T. Phones