• Din Mounted Digital Panel Meter - DDD Series from APG Sensors
  • A DDD is shown listing the number of gallons in a tank of water, measured by an MNU. The water lowers in the tank.
  • DDD installed in a power panel

Din Mounted Digital Panel Meter


A Lot of Information in a Small Space

Two configurable, six-character lines, eight LED alarm indicators, and four push buttons, on a display that is smaller than 5" x 2.5".


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

Strong Face in a Durable Panel
The front face of the DDD is rated NEMA 4X, IP 65, so proper installation in a suitable panel will lead to long lasting, dependable read outs.

The DDD is accurate to ±0.03% of calibrated span, giving you a precision display of your analog sensor's 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.

Din Mount Digital Panel Meter
Model Number Model Description
DDD-A00 85-265 VAC input power, No outputs (visual display only)
DDD-D02 12-24 VDC input power, 2 output relays
DDD-D14 12-24 VDC input power, 4-20 mA & 4 output relays
Din Mount Bright Digital Panel Meter
Model Number Model Description
DBD-D14 12-24 VDC input power, 4-20 mA & 4 output relays


2 lines, 6 characters each
Top line: 0.6" (15 mm) characters
Bottom line: 0.46" (12 mm) characters
Optional Sunlight Readable Bright Display (model DBD)
Display Update Speed
200 ms (5 updates per second)
± 0.03% of calibrated span


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
2 or 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)


4.68" x 2.45" x 5.64" (119 mm x 62 mm x 143 mm)
9.5 oz (269 g)


Front panel rating
Storage Temperature
-40° - 185°F (-40° - 85°C)
Operating Temperature
-40° - 149° F (-40° - 65°C)


UL/C-UL Listed