The Dragino SW3L is a LoRaWAN® liquid flow sensor, designed to monitor water flow volume in various environments such as buildings, industrial facilities, and outdoor installations.
It provides real-time data transmission to IoT servers via the LoRaWAN® network, enabling efficient water usage monitoring and management.
With low power consumption and long-range connectivity, the SW3L ensures reliable performance for applications requiring accurate and remote flow measurement.
🔑 Key Features
✔ Accurate Flow Monitoring – Measures water flow volume with high precision, suitable for water control and waste monitoring applications.
✔ LoRaWAN® Wireless Communication – Supports LoRaWAN® v1.0.3 Class A protocol, compatible with multiple frequency bands: CN470, EU433, KR920, US915, EU868, AS923, AU915, IN865, and RU864.
✔ Low Power Consumption – Equipped with an 8500mAh Li-SOCI2 battery, designed for long-term use (up to 5 years), depending on the update period.
✔ Weatherproof Design – Built for indoor and outdoor installations, featuring a weatherproof enclosure and industrial-grade components to operate in -40°C to 85°C.
✔ Smart Alerts – Detects water flow status and sends alarms to prevent water waste due to leaks or broken fixtures.
✔ Remote Configuration & OTA Updates – Supports Bluetooth v5.1 for configuration and wireless over-the-air (OTA) firmware updates, ensuring easy maintenance and adjustments.
📦 Technical Specifications
✅ Supply Voltage: Built-in 8500mAh Li-SOCI2 battery, operating at 2.5V - 3.6V.
✅ Operating Temperature: -40°C to 85°C.
✅ LoRa Frequency Range: 862MHz to 1020MHz.
✅ RF Output Power: +22 dBm maximum RF output.
✅ RX Sensitivity: Down to -139 dBm, ensuring excellent blocking immunity.
✅ Power Consumption:
• Sleep Mode: 5µA @ 3.3V
• LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
✅ Flow Sensor Specifications:
• Diameter: G3/4" / DN20
• Pulse Rate: 32 pulses per liter
📥 Product Downloads
- Measurement Type: Liquid Flow Monitoring
- Pipe Size: 3/4 inch
- Flow Rate Range: 1.0 ~ 60 L/min
- Pulse Frequency: 4.8 x Q (L/min)
- Accuracy: ±5%
- Max Water Pressure: ≤1.75 MPa
- LoRaWAN® Protocol: 1.0.3, Class A
- LoRa® Frequency Bands: EU868, US915, AU915, AS923, IN865, KR920, RU864
- LoRa® TX Power: Up to 20 dBm
- LoRa® Sensitivity: -137 dBm
- Power Supply: 8500mAh Li-SOCL2 battery (replaceable)
- Battery Life: Up to 5 years (depending on reporting frequency)
- Operating Temperature: -40°C to 85°C
- Ingress Protection: IP67 Waterproof
- Installation: Inline with water pipeline