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Efento NB-IoT ANA 4-20 mA Sensor Interface

NB-IoT sensor interface with 2 × 4–20 mA analog inputs for connecting external analog sensors. Sends measurement data directly via the mobile network to the Efento Cloud or another cloud platform, without a gateway or router.
Supports battery or external power for sensors, has a battery life of up to 5 years, adjustable measuring intervals and alarm thresholds, and can easily be configured via cloud or Bluetooth.
179.93 € 179.93 € (Tax included)
148.70 € (Tax included)

148.70 € 148.70 € without taxes


  • Brand
  • Power supply
  • Usage type
  • Sensor(s)
  • Product type
  • Connectivity type
  • Affichage
  • Alarm functions
  • Alarm functions
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Brand: Efento
Power supply: Battery replaceable
Usage type: Usage multiple
Sensor(s): External
Product type: Data logger
Connectivity type: SIM card (NB-IoT / LTE-M)
Affichage: No (only via software/app/cloud)
Alarm functions: E-mail , SMS
Documents
NB-IoT sensors – Quick start manual.pdf NB-IoT sensors – User manual.pdf NB-IoT_4-20-mA-sensor-interface-2.pdf

Internal Reference: 5221

The Efento 4–20 mA Sensor Interface makes it possible to easily connect analog sensors to the cloud. The device is equipped with 2 × 4–20 mA analog inputs, allowing simultaneous operation with up to two external sensors. The connected sensors can be powered via the device's internal battery or via an external power source.

The measurement data is transmitted as 4–20 mA current values and can be displayed in the Efento Cloud or another cloud platform, or converted to other units of measurement.

Thanks to NB-IoT connectivity, the device sends data directly over the mobile network, without needing additional hardware such as routers or gateways. Configuration is quick and easy via a smartphone with Bluetooth Low Energy (BLE).

Key features

  • 2 × 4–20 mA analog inputs

  • NB-IoT connectivity – no gateway or router needed

  • Up to 5 years of battery life (maintenance-free)

  • Measuring interval adjustable from 1 minute to 10 days

  • Adjustable alarm thresholds with immediate data transmission when exceeded

  • Internal memory for 40,000 readings (oldest data overwritten)

  • Remote configuration via the cloud or locally via Bluetooth LE

  • Compatible with Efento Cloud and other cloud platforms

Accuracy

  • 0.1% accuracy with factory calibration

  • 0.01% accuracy with 4-point user calibration

Connectivity

NB-IoT

  • 3GPP Release 13

  • Transmit power: 23 dBm ±2 dB

  • Standard bands: B8, B20

  • Optional bands (on request):

    B1 / B2 / B3 / B4 / B5 / B8 / B12 / B13 / B17 / B18 / B19 / B20 / B25 / B26 / B28 / B66

Bluetooth Low Energy (BLE)

  • Frequency: 2.4 GHz

  • Power: 2.5 mW (4 dBm)

  • Range: up to 100 m (line-of-sight)

  • Transmission period: 1 second

Communication & Updates

  • Protocol: CoAP

  • Transmission interval: 5 minutes to 10 days (adjustable)

  • Over-the-air firmware updates (delta mechanism)

  • Updates possible via Bluetooth Low Energy

Power supply

  • 3 × AA batteries (6300 mAh, replaceable)

  • Battery life: up to 5 years

Dimensions & Weight

  • Dimensions: 124 × 60 × 26 mm

  • Weight: 0.13 kg