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Industrial-Grade Optical Rain Gauge RG-15 Rain Sensor

Industrial-Grade Optical Rain Gauge RG-15 measures rainfall volume and intensity accurately and reliably. It features easy-installation and maintenance-free, suitable for applications in weather and climate studies, hydrological network monitoring, and agriculture, and other scenarios that need monitoring rainfall data.

Out of stock
  • 10+: $79.00


Industrial-Grade Optical Rain Gauge RG-15 measures rainfall volume and intensity accurately and reliably. It features easy installation and is maintenance-free, suitable for multiple applications that require rainfall data monitoring. It can also be used with the SenseCAP LoRaWAN® Data Logger to easily connect with the local LoRaWAN® network, enjoying the benefits of low-power and long-range communication.


    • Industrial-grade design: High reliability with a rugged surface, provides accurate measurements
    • User friendly: Can be easily installed on weather station masts, buildings, and other infrastructures
    • Maintenance-free: No debris would be generated and no clogging in the gauge
    • Wide application scenarios: Can be used in various scenarios like hydrological network monitoring, irrigation control, climate studies, etc.


Rainfall volume provides important information for people's decisions and actions in weather and climate studies, hydrological network monitoring, agriculture, food delivery, and many other industries. In the agriculture scenario, with the precipitation information accessible, farmers can make sound decisions for the irrigation schedule and amount, ensuring sufficient water for crop growth, and avoiding waste of water, root rot, or other diseases.
This industrial-grade Optical Rain Gauge RG-15 is a perfect fit for rainfall measurement. It's a reliable, cost-effective, and rugged rain gauge that uses light beams to determine how much rain has fallen at what intensity. It uses beams of infrared light within a plastic lens about the size of a tennis ball. With the round surface of the lens, there are no collections of debris, no moving parts to stick, or water pathways to clog.
The RG-15 Optical Rain Gauge features an open-collector output that emulates a conventional tipping bucket, as well as serial communications that provide more detailed data and allow for the configuration of the device. It can be configured through the serial port, or optionally via DIP switches. A built-in mounting arm allows for convenient mounting to weather station masts, buildings, and other infrastructure. It's also suitable for solar-powered applications.


    • Smart Agriculture
    • Smart City
    • Climate Studies
    • Hydrological Network Monitoring
    • Condensation and Frost Sensing
    • Irrigation Control
    • Drop Detection
    • Wiper Control


Please send an email to sensecap[at]seeed[dot]cc to request any technical support for this product.


Parameter Value Connection Pins
Nominal Accuracy ±10% J1 Terminal
J1 - Out
J1 - V+
J1 - GND
Input Voltage Range 5-15 VDC 50V surge on J1 Reverse polarity
protected to 50V or 3.3VDC through pin 8 on J2
Current Drain (Not final) 110 μA nominal. (No outputs on, dry not raining)
2-4 mA when raining
J2 Header
J2 - 1 GND
J2 - 2 V+ (Same as J1 V+)
J2 - 3 OUT (Same as J1 OUT)
J2 - 4 RS232 OUT
J2 - 5 RS232 IN
J2 - 6
J2 - 7 MCLR
J2 - 8 3.3V
Output NPN Open Collector Output 100 mA / 80V Max
Operating Temperature -40°C to +60°C (Will not detect rain when freezing)
Output Resolution 0.01in / 0.2mm or 0.001in / 0.02mm
RS232 Port 3.3 V
Supported Baud Rates 1200, 2400, 4800, 9600, 19200, 38400, 57600



HSCODE 9031900090
USHSCODE 9026104000
EUHSCODE 9013101000
COO China
RoHS 1



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