Enda epa241a programmable ac dc ammeter panel mount enda epa241a r 230 sw a panel mounting programmable digital ac dc ammeter that can also be used with a current transformer or shunt the meter can measure ac dc and true rms current and displays the result on a 4 digit led display a keypad allows for control and the unit features a multifunctional alarm relay output that can be used to indicate upper and lower limits enda epa241a r 230 sw blk installation ammeter