1. Wide voltage operation: 3.3~5.5V2. 0~2.3V analog signal output, compatible with 5V, 3.3V two control systems3. The excitation source is an AC signal, effectively preventing probe polarization4. Waterproof probe for long-term immersion in water5. compatible, easy to connect, plug and play, no soldering requiredInput voltage: 3.3~5.5VOutput signal: 0~2.3VWorking current: 3~6mATDS measurement range: 0~1000ppmTDS measurement accuracy: 10% F.S. (25Celsius)Module interface: XH2.54-3PElectrode interface: XH2.54-2PNumber of probes: 2Connection interface: XH2.54-2POther: Waterproof probeColour:Black+whiteMaterial:plasticSize:42x32mmOverall length: 83cmPackage Contents:1 x TDS signal adapter board1 x Waterproof TDS probe1 x Analog sensor lineOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.