Features: TDS probe with high corrosion resistance, hollow internal epoxy resin can withstand a pressure of 30 kg. Note: The black wire: water quality probe line, and the white line: temperature exchanger line. This equipment can be used for measuring general household water quality. Wide voltage operation: 3~5V. Waterproof probe, can be immersed in water for long-term measurement Specifications: Working current <5mA, maximum <10mA Detection range: 0-2000ppm Resolution: 1ppm Response time: 31 seconds Output communication UART, baud rate 9600, data bits 8, 1 stop bit, no control Temperature detection range: 0-99 ℃ Temperature detection separation rate: 10 Temperature detection accuracy: 1 ℃ Temperature detection response time: 31 seconds Operating temperature: 0 ℃ - 50 ℃ Storage temperature: 30 ℃+85 ℃ Note: Please allow 1 mm error due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Analog TDS sensor