
SenseCAP Optical Dissolved Oxygen (DO) Sensor Probe (RS485 Modbus)
Industrial optical fluorescence dissolved oxygen sensor (0-20 mg/L) with Modbus-RTU RS485. No membrane replacement or electrolyte needed; #1 sensor for shrimp & fish ponds.
We do not keep stock. After order confirmation and advance payment, we purchase directly from the international manufacturer. Total delivery takes 7 to 45 business days based on factory lead time, freight transit, customs clearance, and mandatory QA inspection at our Dhaka facility before final delivery.
Industrial hardware price depends on system configuration, quantity, and customs clearance. Contact our technical desk on WhatsApp for instant pricing.
The SenseCAP S-RJY-01 is an optical Dissolved Oxygen (DO) sensor utilizing advanced luminescence/fluorescence quenching technology. Unlike traditional electrochemical DO sensors that consume oxygen and require frequent membrane replacements and electrolyte refills, the optical S-RJY-01 consumes zero oxygen, is immune to hydrogen sulfide poisoning in pond mud, and maintains calibration for over a year. In Bangladesh's commercial aquaculture industry—where hypoxia (oxygen depletion) in the early morning hours causes massive economic losses in intensive shrimp and carp ponds—this sensor provides continuous, reliable dissolved oxygen and temperature telemetry via RS485 to the SenseCAP S2100 LoRaWAN logger or 4G Sensor Hub.
- Fluorescence quenching optical technology with zero oxygen consumption
- No electrolyte refills, no delicate teflon membranes, minimal maintenance requirements
- Immune to chemical interference from hydrogen sulfide (H2S), heavy metals, and algae
- High accuracy: ±0.2 mg/L in 0~20 mg/L dissolved oxygen range
- Integrated NTC temperature sensor for automatic temperature compensation
- Industrial RS485 interface running standard Modbus-RTU protocol
- IP68 completely submersible 316L stainless steel and POM housing
- Direct plug-and-play compatibility with SenseCAP S2100 LoRaWAN AS923 logger



