The DP-50-D is a 4-20mA input, 5 digit LED display panel meter. Input signal may be displayed as current or scaled to read in other units (inch, %, etc). Four realy outputs can be independently set by the user. The DP-50-D and DP-101-D can be used with the analog output probes (GYSE, GYcAT, GYLT) or analog controller for applications such as liquid level monitoring and control.