SFL IoT Radio Interface
- Manufacturer: Nesa
- Category: Communication, Signal converters, Process signal to communication converters, INSTRUMENTATION
The NESA SFL is an IoT radio interface for analog and digital sensors: a radio module for data acquisition and transmission using narrowband technology at a programmable frequency (868MHz in Europe), 3G-4G, or SMS (GSM/GPRS), capable of reading digital and analog electrical signals. Data can be sent directly to a cloud platform, via point-to-point connections, or through networks with specific protocols (SigFox, LoRa, Socket, MQTT, etc.) to gateways.
Inputs: differential with current generator for Pt100, Pt100, thermopile, 0 ÷ 2Vdc, 0 ÷ 20mA or 4 ÷ 20mA, frequency up to 3KHz and pulse counter (min. 1ms). 18-bit resolution with more than 262,000 measurement points in the selected range for analog inputs, 25Hz for frequencies; average accuracy <20µV fs. Transmission frequency 860 ÷ 920MHz – programmable or quad-band (GSM/GPRS), IP65 die-cast aluminum housing, -40 ÷ +60°C.
Key points
- Inputs: Pt100 (also differential with current generator), thermopile, 0 ÷ 2Vdc, 0 ÷ 20mA or 4 ÷ 20mA, frequency up to 3KHz, pulse counter (min. 1ms)
- Maximum possible configuration: 2 x analog or Pt100; 1 x digital (3000Hz); 1 x digital (frequency or counter)
- 18-bit resolution with over 262,000 measurement points in the selected range, 25Hz for frequencies; average accuracy <20µV fs.
- Transmission frequency 860 ÷ 920MHz – programmable or quad-band (GSM/GPRS); protocols SigFox, LoRa/Lora-WAN, proprietary, SMS, Socket TCP-IP, MQTT
- Range: SigFox up to 15km, LoRa up to 8km, SFL.NESA-P up to 5km (with Gateway), GSM/GPRS depending on operator availability in the area
- Power supply: 1 x 3.3V 8000mA non-rechargeable C2 type lithium battery, or rechargeable battery from power bank, mains or external mini solar panel (2000mA)
- Sensor power supply +12Vdc (maximum consumption allowed 30mA, heating <4s @ 12Vdc)
- -40 to +60°C; die-cast aluminum IP65; 225 x 300 x 50 mm; 1450 g; CE
Technical Frequently Asked Questions
What is SFL?
An IoT radio interface for analog and digital sensors, with 18-bit acquisition and data transmission via SigFox, LoRa/NESA, 3-4G or SMS (GSM/GPRS).
What input signals does it accept?
Differential input with current generator for Pt100, Pt100, thermopile, voltage 0 ÷ 2Vdc, current 0 ÷ 20mA or 4 ÷ 20mA, frequency up to 3KHz and pulse counter (min. 1ms). Maximum possible configuration: 2 x analog or Pt100; 1 x digital (3000Hz); 1 x digital (frequency or counter).
What resolution and accuracy does it have?
18-bit with over 262,000 measurement points in the selected range for analog inputs, 25Hz for frequencies; average accuracy <20µV fs.
What is its scope and what are its protocols?
SigFox up to 15km, LoRa up to 8km, SFL.NESA-P up to 5km (with Gateway), GSM/GPRS depending on operator availability in the area. Protocols: SigFox, LoRa/LoRa-WAN, proprietary, SMS, TCP/IP Socket, MQTT.
How does it feed?
Powered by one non-rechargeable 3.3V 8000mA C2 type lithium battery, or rechargeable via power bank, mains, or external mini solar panel (2000mA). It powers sensors at +12Vdc (maximum consumption 30mA, heating time <4s @ 12Vdc).
What references are there?
SFL.Lora-P, SFL.SigFox-P, SFL.NESA-P and SFL.SMS-P, all with rechargeable battery and 5W solar panel included.
How do I order it?
Depending on the radio module (SFL.SigFox, SFL.LoRa, SFL.NESA, or SFL.SMS), the power supply (P, 5W solar panel), and the accessories (Gateway or Ant.1). Manufacturer example: SFL.SMS P Gateway.
Properties
| Feature | Specification |
|---|---|
| Tickets and measurement | |
| Product type | IoT radio interface for analog and digital sensors |
| Differential input | With current generator for Pt100 |
| Temperature input | Pt100, thermopile |
| Power input | 0 ÷ 2Vdc |
| Power input | 0 ÷ 20mA or 4 ÷ 20mA |
| Frequency input | Up to 3KHz |
| Scaler | Min. 1ms |
| Maximum possible configuration | 2 x analog or Pt100; 1 x digital (3000Hz); 1 x digital (frequency or counter) |
| Resolution | 18-bit with over 262,000 measurement points in the chosen range for analog inputs, 25Hz for frequencies |
| Average accuracy | <20µV fs. |
| Data transmission | |
| Transmission frequency | 860 ÷ 920MHz – programmable or quad-band (GSM/GPRS) |
| Scope | SigFox up to 15km, LoRa up to 8km, SFL.NESA-P up to 5km (with Gateway), GSM/GPRS depending on operator availability in the area |
| Transmission protocols | SigFox, LoRa/Lora-Wan, Proprietary, SMS, Socket TCP-IP, MQTT |
| Data transmission | Configurable at specific intervals |
| Feeding | |
| Non-rechargeable battery | 1 x 3.3V 8000mA C2 type lithium battery |
| Rechargeable battery | From power bank, mains or external mini solar panel (2000mA) |
| Sensor power supply | +12Vdc |
| Maximum admitted consumption (sensors) | 30mA |
| Warm-up time (sensors) | <4s @ 12Vdc |
| Environment and mechanical data | |
| Working temperature | -40 to +60°C |
| Box material | Die-cast aluminum, for outdoor use |
| Protection class | IP65 |
| Dimensions | 225 x 300 x 50mm (see drawing) |
| Weight | 1450g |
| Regulatory compliance | EC |
| Reference | Configuration |
|---|---|
| SFL.Lora-PSFLLoraP | Description: Wireless acquisition and transmission interface for IoT LoRa/LoRaWAN platform, 868MHz (Europe), for low-power analog or digital sensors; rechargeable battery and 5W solar panel included. Data transmission every 15 minutes directly to the cloud, accessible via browser or app. |
| SFL.NESA-PSFLNESAP | Description: Wireless acquisition and transmission interface with NESA protocol – 868MHz (Europe), for low-power analog or digital sensors; rechargeable battery and 5W solar panel included. Data transmission to a gateway connected to a PC or datalogger, range 5km (with gateway). |
| SFL.SMS-PSFLSMSP | Description: GSM/GPRS radio acquisition and transmission interface for low-power analog or digital sensors; rechargeable battery and 5W solar panel included. Data is transmitted every 30 minutes directly to the cloud, accessible via web browser or app. |
| SFL.SigFox-PSFLSigFoxP | Description: Wireless acquisition and transmission interface for the SigFox IoT platform, 868MHz (Europe), for low-power analog or digital sensors; rechargeable battery and 5W solar panel included. Data transmission every 15 minutes directly to the cloud, accessible via browser or app. |
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