{"title":"Gravity: Analog TDS Sensor/Meter for Arduino","handle":"gravity-analog-tds-sensor-meter-for-arduino","url":"/products/gravity-analog-tds-sensor-meter-for-arduino","description":"The Gravity Analog TDS Sensor is an Arduino-compatible kit for measuring Total Dissolved Solids (TDS) in water. TDS indicates how many milligrams of soluble solids are dissolved per litre — the higher the value, the less clean the water. This sensor outputs a 0–2.3V analog signal that can be read by any 3.3V or 5V microcontroller.\n\nThe kit uses an AC excitation source to prevent probe polarisation and extend probe life, while maintaining stable output readings. The waterproof probe can be immersed for long-term monitoring, making it suitable for domestic water testing, hydroponics, and aquariums.\n\nKey Features\n\n\nWide Voltage Input – 3.3–5.5V, compatible with 5V and 3.3V controllers\n\nAnalog Output – 0–2.3V signal, plug and play via Gravity interface\n\nAC Excitation – Prevents probe polarisation for longer probe life and stable readings\n\nWaterproof Probe – 83 cm cable with XH2.54-2P connector\n\nTDS Range – 0–1,000 ppm\n\nAccuracy – ±10% F.S. at 25°C\n\n\nSpecifications\n\n\nInput Voltage – 3.3–5.5V\n\nOutput Voltage – 0–2.3V\n\nWorking Current – 3–6 mA\n\nModule Size – 42 × 32 mm\n\nModule Interface – PH2.0-3P\n\nProbe Length – 83 cm\n\nProbe Interface – XH2.54-2P\n\n\n\nWarning: Do not use the probe in water above 55°C. Keep the probe away from container edges to avoid inaccurate readings. The probe head and cable are waterproof, but the connector and signal transmitter board are not.\n\n\nIdeal For\n\nDomestic drinking water quality testing\nHydroponic nutrient monitoring\nAquarium water quality\n\n\nPackage Contents\n\n1× TDS Signal Transmitter Board\n1× Waterproof TDS Probe (83 cm)\n\n\nResources\n\nProduct Wiki\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":8763,"title":"Default Title","sku":"DF-SEN0244","price":21.03,"on_sale":false,"in_stock":true,"available_quantity":1015,"option1":"Default Title"}]}