DM Devices offer a number of different inputs including:
- Digital Inputs
- Analogue (0-30V) inputs
- 4-20mA Inputs
- BLE
- I2C
- 1-wire
Check each individual product's datasheet for the full specification, but inputs are generalised here:
Input | Device |
| Digital Input | Dart2 (Ignition + 2) G100 (Ignition + 4) G120 (Ignition + 6) G62 Cellular (Ignition + 2) G62 LoRaWAN (Ignition + 2) Falcon (2) |
| Digital Inputs with Pulse Count | SensorData Sigfox (2) SensorData LoRaWAN (3) SensorNode LoRaWAN (2) Eagle (3) |
| Analogue Inputs (0-30V) | G120 (2) G62 Cellular G62 LoRaWAN (1) Falcon (1) SensorData LoRaWAN (1) SensorData Sigfox (2) SensorNode (2) Eagle (2) |
| 4-20mA | Eagle (2) |
| BLE | Remora2 G120 Eagle |
| I2C | SensorData Sigfox SensorData LoRaWAN SensorNode LoRaWAN Falcon Eagle |
| SDI-12 | SensorData Sigfox SensorData LoRaWAN |
| 1-Wire | Dart Eagle G62 Cellular |
A brief description of each input:
Digital Inputs:
Used to determine on/off status. Will be registered as 0 (off) or 1 (on).
Typical applications include panic buttons, door open closed, monitoring engine on/off, run hours when connected to a PTO
Analogue Inputs:
Can be connected to a variety of sensors e.g. Temp Sensor, ultrasonic sensor etc, that output a certain voltage based on the temp/distance etc. This can be thought of as a voltage input.
Can also be used to read 4-20mA signals when combined with a sense resistor.
4-20mA:
Common sensor output. Sensor will output 4mA when at the minimum of its range, and 20mA when at the maximum.
BLE:
Some Digital Matter Devices have a BLE 5 Module on board. This means that any sensor that uses Bluetooth could be integrated into the device FW so the sensor can be read.
I2C:
Inter-IC communication. Low level communication interface which is used on many different sensor types.
SDI-12:
Commonly used in the Ag-Tech space for soil moisture probes etc.
1-wire:
Generally used for I-Button Tags and readers.
What Sensors do DM products support:
The following sensors are currently supported
| Sensor Type | Model | Supported Devices |
| Temperature | DM I2C Temperature Probe | All DM devices with I2C input |
| Texas Instruments TMP117 | Falcon | |
| Temperature + Humidity | DM I2C Temp/Humidity Sensor | All DM Devices with I2C input |
| Ultrasonic Range | Maxbotix MB7040 | Falcon |
| Infra Red | MLX90614 | SensorNode, SensorData |
I need to use a sensor that isn't listed here, what are my options?
If an application requires a particular sensor that is not currently catered for, DM can integrate sensors.
I2C sensors are a common sensor type. I2C is a low level communication interface, so simply connecting an I2C sensor to a product with an I2C input in general will not work.
Please contact DM so that the sensor can be integrated into device firmware.
Similarly if a particular BT sensor is desired, contact DM for integration information.