Discrete Input Module Type 1 (DIN-1)

With the introduction of our new product line (Chameleon+), 2023 (or while supplies last) marks the end of production for legacy Chameleon (EOL Announcement). We will continue to provide technical support on all EOL products. In addition, we will continue to repair the EOL products for as long as replacement parts can be acquired.

Features and Benefits

  • Discrete Signal Data Acquisition
  • Twenty-Four Auto-Detecting AC/DC Voltage Inputs
  • Integrated User Interface (Programmable Indicators)
  • Fully Sealed Enclosure (NEMA 4X, 6, 13 Protection)
  • -40°C to +65°C (-40°F to +149°F) Operating Range
  • MIL-STD-901D Grade A for High Impact Shock
  • MIL-STD-167B for Vibration
  • MIL-STD-461E for Electro-Magnetic Interference (Pending)
  • Powerful and easy-to-use graphical programming
  • Supports Hot Swapping

The Chameleon Discrete Input Module (DIN-1) offers 24 discrete input channels for data acquisition.  The input channels are universal, with the capability to accept a broad range of AC and DC signals with no reconfiguration or rewiring required.

Powered by a 33MHz ARM processor with 1MB of onboard RAM and 1MB of flash memory, the DIN-1 provides sufficient computational power to handle the most demanding applications.  The DIN-1 embedded firmware is stored in its flash memory and is upgradeable: you can rest assured that the hardware investment you make in Chameleon will not become obsolete.

Using Fairmount Automation’s intuitive and easy-to-use graphical programming package (Design Pad) you can develop sophisticated signal processing for the DIN-1 in a matter of hours—even without any prior programming experience.  Programming the device entails “drawing” a desired control scheme using a vast array of configurable function blocks.  These function blocks are wired together to indicate the signal flows from device inputs to device outputs.  Once complete, configuration programs are downloaded to the unit via a wireless IR interface.

Each DIN-1 unit also provides eight multi-colored programmable status-indication LEDs with associated tag holders that can be used to label the corresponding signals.  In addition, the DIN-1 includes 24 LEDs — each one is matched to a specific input channel and indicates if the contact is open or closed.

As with all Chameleon modules, the DIN-1 offers unequaled ruggedness.  It is specifically designed for sustained operation in severe environments, including those characterized by extreme shock, vibration, electro-magnetic interference, temperature, and/or humidity.  Its fully-sealed enclosure (sealing end-caps not pictured) ensures long-lasting operation in the grimiest settings.  In fact, Chameleon modules can operate fully submerged.

Operating Ambient Temperature Range -40°C to 65°C
Storage/Transport Ambient Temperature Range -40°C to 85°C
High Impact Shock MIL-STD-901D, Grade A
Mechanical Vibration MIL-STD-167B, 0-50Hz
Electro-Magnetic Interference MIL-STD-461E (Pending)
Facial/Housing Protection NEMA 1,2,4,4X,5,6,12,12K,13
Quantity 24 Channels (2 Banks of 12)
Maximum Allowable Continuous Input Voltage 200 VDC or 140 VAC RMS
Maximum Allowable Voltage Spike 1000V peak 1.2μS x 50μS pulse per MIL-STD-1399 Section 300
Logic High Voltage Range 5-200 VDC or 24-130 VAC RMS 55-500 Hz
Minimum Input Duration for Logic High Detection 4 mA
Logic Low Voltage Range 0-1 VDC or 0-0.5 VAC RMS 55-500 Hz
Minimum Input Duration For Logic Low Detection 56 mA
Minimum Input Current Required (AC and DC inputs) 5mA RMS
Electrical Isolation: Two sets of input banks each with 12 inputs
Bank to Bank Isolation 350 VRMS for 1 minute
Any input to control circuitry or chassis ground 1240 VRMS for 1 minute
Maximum Power Requirements 1.3W + 0.03 W/mA x (current draw from aux. power source)
Maximum Allowable Auxiliary Output Current 220mA at 24VDC
Real-Time Clock Battery Life (Minimum; No power applied, 25°C) 10 Years
Supported Cable Diameters Two glands 0.35”-0.51”; six glands 0.31”-0.41”
Supported Wire Gauges 16-28 AWG
Digital Readouts Eight user programmable three-color (red/yellow/green) LEDs with label holders
Input Port State Readouts 24 green LED indicators (1 per port)
Status Readout One three-color (red/yellow/green) LED Indicator
IR Wireless Interface

115kbps SIR

Weight 2.2 lbs
Front Panel Dimensions 4” W x 6” L
Enclosure Height 3″ H

The following part numbers can be used when ordering the Discrete Input Module (DIN-1).

Fairmount Part Number


01012-062 DIN-1 with Gray Enclosure
01012-362 DIN-1 with Black Enclosure (without Stuffing Tubes)
11063-200 DIN-1 Active Board and Gray Cover
11063-250 DIN-1 Active Board and Black Cover
01014-062 DIN-1 Full-Size Gray Enclosure with Wiring Hub Assembly
01014-362 DIN-1 Full-Size Black Enclosure and Wiring Hub Assembly (without Stuffing Tubes)
11064-100 DIN-1 Wiring Hub Assembly