SenseCAP Wireless Light Intensity Sensor - LoRaWAN

About SenseCAP

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 Light Intensity Sensor measures the intensity of light in lux from 0 – 188000 lux, which is designed for outdoor use.

This battery-powered device incorporates a built-in LoRa transmitter based on SX1276 for long-range transmission, a digital light 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 light data to the gateway, and then goes back to sleep.

Under the best of circumstances, the battery is expected to last for 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.

To fit in adverse conditions, it is designed with industry standards and equipped with an IP66 waterproof enclosure, supporting an extended operating temperature range, making it suitable for industrial applications in both indoor and outdoor severe environments.

SenseCAP Sensor Node adopts a modular design, integrating the data logger with the sensor probe, which is replaceable by other SenseCAP sensor probes.

Note

SenseCAP Sensor is fully compliant with LoRaWAN specifications and can be used with standard LoRaWAN gateways. Please choose the corresponding gateway according to the sensor frequency. Seeed also provides SenseCAP LoRaWAN Gateway for you to use with SenseCAP Sensors seamlessly without extra huge workload for provisioning.

System Architecture

SenseCAP Architecture

System Architecture

SenseCAP Sensor + Other LoRaWAN Gateway Architecture

Other System Architecture

Features

Support LoRaWAN protocol Class A
High reliability and stability
An ultra-wide 22-bit dynamic range
Ultra-wide-distance transmission: 10km in line of sight scene, 2 km in urban scenes
Transmission Interval: every 1 hour
Battery life ≥ 8 years
IP66 enclosure, suitable for outdoor applications
Rapid installation and deployment (see the video below)

Applications

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Smart Agriculture
Smart Building
Environmental Monitoring
Other Wireless Sensing Applications

User Cases

SenseCAP has been deployed in different application scenarios including tea plantations, greenhouses, outdoor triticale farms and weather stations, etc., Please see more info below.

SenseCAP Played A Role in Monitoring Environmental Data for AiCU Team to Grow Cherry Tomatoes at the Optimal Use of Resources in Autonomous Greenhouse Challenge 2020 in Wageningen University & Research, Holland.
SenseCAP Assisted the IoT Solutions for Kinghoo Poultry Farms and Livestock Farms by Detecting the Environmental Changes with Preset Interval.
SenseCAP Helped to Construct an IoT Solution to Empower Systematic Malaysia Durian Farm.
SenseCAP Deployed in Outdoor Triticale Farm, Empowering Precision Agriculture in Dingzhou, Hebei Province, Northern China
Smart Agriculture Demonstration Park of Sweet Melons Empowered by SenseCAP in Beihai Guangxi, Southern China
SenseCAP Empowers Tourism in Hakka Villages by Collecting Environmental Data at in Heyuan, Guangdong, Southern China
SenseCAP Monitoring Environmental Data in Smart Greenhouses Growing Tropical Fruits in Shandong, Northern China.
Smart Tea Plantation in Mengding Mountain to Monitor Key Environmental Data with SenseCAP for Increasing Efficiency and Customer Trust
SenseCAP Deployed in Environmental Monitoring Projects in Stockholm, Sweden

Specifications

Air Temperature
Range	0 to 188000 Lux
Sensitivity	0.045 Lux/LSB
Resolution	0.045 Lux
General Parameters
Product Frequency	EU868, US915
Microcontroller	Ultra-low-power MCU
Support Protocol	Based on LoRaWAN v1.0.2 protocol
LoRa Channel Plan	EU868, US915
LoRa Power Output	16 dBm (EIRP)
Sensitivity	-137.5dBm(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)
IP Rating	IP66
UV Resistance	anti-aging (from rain/sun exposure): UL746C F1
Enclosure Material	PC
Operating Temperature	-40 ℃ to +85 ℃
Operating Humidity	0 to 100 %RH (non-condensing)
Device Weight	288g
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)

LoRa Frequency

LoRa Channel Plan for EU868
Uplink (MHz)	868.1 – SF7BW125 to SF12BW125 868.3 – SF7BW125 to SF12BW125 and SF7BW250 868.5 – SF7BW125 to SF12BW125 867.1 – SF7BW125 to SF12BW125 867.3 – SF7BW125 to SF12BW125 867.5 – SF7BW125 to SF12BW125 867.7 – SF7BW125 to SF12BW125 867.9 – SF7BW125 to SF12BW125
Downlink (MHz)	Uplink channels 1-8 (RX1) 869.525 – SF9BW125 (RX2 downlink only)

LoRa Channel Plan for US915
Uplink (MHz)	903.9 – SF7BW125 to SF10BW125 904.1 – SF7BW125 to SF10BW125 904.3 – SF7BW125 to SF10BW125 904.5 – SF7BW125 to SF10BW125 904.7 – SF7BW125 to SF10BW125 904.9 – SF7BW125 to SF10BW125 905.1 – SF7BW125 to SF10BW125 905.3 – SF7BW125 to SF10BW125
Downlink (MHz)	923.3 – SF7BW500 to SF12BW500 923.9 – SF7BW500 to SF12BW500 924.5 – SF7BW500 to SF12BW500 925.1 – SF7BW500 to SF12BW500 925.7 – SF7BW500 to SF12BW500 926.3 – SF7BW500 to SF12BW500 926.9 – SF7BW500 to SF12BW500 927.5 – SF7BW500 to SF12BW500