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SenseCAP Wireless Light Intensity Sensor – LoRaWAN

SenseCAP Wireless Light Intensity Sensor measures the intensity of light in lux from 0 – 188000 lux. It is designed with battery-powered and IP66 enclosure for outdoor use, optimized for use cases that need reliable data collection over years.

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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.
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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 ≥ 3 years
  • IP66 enclosure, suitable for outdoor applications
  • Rapid installation and deployment (see the video below)

Applications

  • 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.

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

The device is designed with a fixed LoRa channel, which can not be modified by users. The supported channels are as follows. Please refer to this document for how to connect this device with a LoRaWAN gateway.
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

Part List

Light Partlist
Part List
1 Sensor x1
2 Bracket x1
3 M4 Self-drilling Screw x4
4 M3 Self-drilling Screw x2

 

Datasheet – SenseCAP Wireless Light Intensity Sensor – LoRaWAN

SenseCAP LoRaWAN Sensor User Manual-V1.0

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