Gravity: Analog Dissolved Oxygen Sensor Kit | Galvanic Probe, No Polarization | DO Meter (0-20mg/L) | 3.3V-5V for Arduino, ESP32 & Raspberry Pi | Water Quality Monitor for Aquaculture & IoT

[NO POLARIZATION, INSTANT READING] Features a galvanic probe that requires no pre-heating or polarization time. It stays available at any time for instant measurement with a detection range of 0~20mg/L and a fast response time of 90 seconds to reach 98% full response (at 25), making it ideal for intermittent power supplies and low-power IoT water quality monitoring systems.. [HARDWARE FILTERING For STABLE SIGNAL] The signal converter board features integrated hardware filtering. This circuit outputs smooth, low-jitter analog voltage without requiring additional software processing. It supports a wide 3.3V to 5.5V range and the standard Gravity 3-pin interface, making it perfectly compatible with Arduino, ESP32, and Raspberry Pi (ADC module required) without complex soldering.

. [SPARE MEMBRANE CAP & LOW MAINTENANCE] This do kit includes a spare membrane cap to ensure the project stays running longer. Both the cap and filling solution are replaceable. There is no need to discard the entire expensive probe when consumables run out, significantly lowering the long-term maintenance costs for hydroponics and lab research.