• Large Digital Panel Meter - DDL Series from APG
  • A DDL shows the gallons of water in a tank as the tank level goes down, measured by an MNU.
  • DDL shows reading in a dark room.

Large Digital Panel Meter


Easily Read Your Display From Any Distance

Two lines of 2.80" characters and four LED alarm indicators, on a Sunlight Bright display


Easy to Program
With four push buttons below the display for programming in place, and a USB port for connection to a PC running MeterView Pro software, setting up the DDL is simple.

Every DDL has a polycarbonate-glass blended front face that is rated NEMA 4X, IP65, for long-lasting life in tough environments.

The DDL can read a variety of current and voltage inputs, plus one digital input, and control up to four SPDT output relays and an isolated 4-20 mA output.

Common Model Configurations

All common model configurations can be purchased online, click the model number link below. Refer to Model Number Configurator on the datasheet for a full list of configuration options.

Large Digital Panel Meter
Model Number Model Description
DDL-A00 85-265 VAC input power, No outputs (visual display only)


2 lines, 6 characters each, 1.80" tall
Display Update Speed
200 ms (5 updates per second)
± 0.03% of calibrated span
Sunlight Readable Bright Display Standard


Supply Voltage
VAC: 85 - 265
VDC: 12 - 24
Input Impedence
Voltage Inputs: > 500 kΩ
Current Inputs: 50 - 100 Ω
SPDT Relays
3 A @ 30 VDC / 125/250 VAC resistive loads
1/14 HP (≈ 50 W) @ 125/250 VAC resistive loads
Input Contact/Digital Input
Contact Voltage: 3.3 VDC
Digital Input Logic High: 3 - 5 VDC
Digital Input Logic Low: 0 - 1.25 VDC
Default Logic: Normally Open/Low


Input Options
0-20 mA, 4-20 mA
0-5 VDC, 1-5 VDC, 0-10 VDC, ± 10 VDC
Output Options
4 SPDT Relays
Isolated 4-20 mA
Output Transmitter Power Supply
Isolated 24 VDC @ 40 mA
Sensor Power Supply
24/10/5 VDC selectable
200 mA for VAC models
100 mA for VDC models


Programmable Features
Min/Max, Tare, Hold
Multi-scale Input Display (e.g. Level & Volume)
Noise Filter
High/Low Alarms
Alternating Pump Control
Time Delay for Output Relays
4 Front-panel Push Buttons
MeterView Pro Software (with PC)


10.63" x 12.59" x 4.77" (270 mm x 319.7 mm x 121.2 mm)
6.10 lb (2.76 kg)


Front panel rating
Storage Temperature
-40° - 185°F (-40° - 85°C)
Operating Temperature
-40° - 150° F (-40° - 65°C)


UL/C-UL Listed