SenseCAP LoRaWAN Soil Moisture and Temperature Sensor

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SenseCAP LoRaWAN Soil Moisture and Temperature Sensor AU915/AS923

SenseCAP Wireless Soil Moisture and Temperature Sensor measure soil volumetric water content (VWC) and temperature. It's designed with a 2-in-1 sensor that integrates soil temperature and soil moisture, a custom battery and an IP66 enclosure optimized for outdoor use cases that need reliable data collected over years.

Among the first launch of Seeed industrial IoT (IIoT) product series, SenseCAP is focusing on wireless environmental sensing applications: smart agriculture, precision farming, and smart city, to name a few. It consists of hardware products (sensors, data-loggers & gateways, etc.), software services (SenseCAP portal, mobile App, open dashboard), and API for device & data management. SenseCAP supports different communication protocols, such as LoRa, 2G, 4G, NB-IoT, and more.

SenseCAP Wireless Soil Moisture & Temperature Sensor measures soil volumetric water content (VWC) and soil temperature at the range of 0 ~ 100% (m³/m³) and -30 ~ 70℃ respectively. With high-quality soil moisture and temperature probe, this sensor features high precision and sensitivity regardless of soil variability, making it widely applicable in industrial scenarios such as water-saving irrigation, outdoor fields, and greenhouses and more.

This device incorporates a built-in LoRa transmitter based on SX1276 for long-range transmission, a 2-in-1 sensor, and a custom battery. It is specifically designed and optimized for use cases powering end devices by batteries for years. To minimize the power consumption, the device wakes up, transmits the collected temperature and humidity data to the gateway, and then goes back to sleep.

Under the best of circumstances, the battery is expected to last for more than 8 years, depending on the data transmission intervals. Please kindly note that the default interval is once per hour. If you'd like to change the data upload interval, please refer to this document.

SenseCAP Sensor adopts a modular design, integrating the data-logger with the sensor probe, which can be replaced by other SenseCAP sensor probes. This sensor's data logger is rated IP66, and the sensor probe is rated IP65.

Features

Support LoRaWAN protocol Class A
High reliability and stability
Ultra-wide-distance transmission: 10km in line of sight scene, 2 km in urban scenes
Battery life ≥ 6 years
Rapid installation and deployment (see the video below)

System Architecture

SenseCAP Sensor + Other LoRaWAN Gateway Architecture

Please refer to this document for how to connect this device with a LoRaWAN gateway.

Specifications

Soil Temperature
Range	-30 ℃ to +70 ℃
Accuracy	±0.5 ℃
Resolution	0.1 ℃
Soil Moisture
Range	From completely dry to fully saturated (from 0% to 100% of saturation)
Accuracy	±2% ( 0 to 50 %); ±3% ( 50 to 100 %)
Resolution	0.03 %(0 to 50%); 1%(50 to 100%)
General Parameters
Product Model	LoRa-S-915-Soil MT-01
Microcontroller	Ultra-low-power MCU
Support Protocol	Based on LoRaWAN v1.0.2 protocol
LoRa Channel Plan	AU915
LoRa Power Output	16 dBm (EIRP)
Sensitivity	-136.5dBm(SF12, BW125KHz)
Current Consumption	5 μA (sleep mode) 120 mA max(active mode)
Communication Distance	2 to 10 km (depending on different antennas and environments)
Measuring Area	A cylinder area (with the probe as the centre, diameter: 7cm, height: 7cm)
IP Rating	IP66
UV Resistance	anti-aging (from rain/sun exposure): UL746C F1
Enclosure Material	PC
Operating Temperature	-30 ℃ to +70 ℃
Operating Humidity	0 to 100 %RH (non-condensing)
Device Weight	415g
Certification	CE, FCC, RoHS
Battery (Contained in equipment)
Battery Life	≥ 3 year (upload data once per hour)
Battery Voltage	3.6V
Battery Capacity	19Ah (non-rechargeable)

Documentations

LoRaWAN Gateway and Wireless Sensor Catalog V1.6

SenseCAP LoRaWAN Sensor User Manual V1.1

SenseCAP Product User Guide(LoRaWAN Series) V1.3