Features: TDS high corrosion-resistance probe hollow internal epoxy resin can withstand pressure of 30kg. Note:The black cord: the water-quality probe line, and the white line : the temperature switch line. This equipment can be used for the measurement of 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: 31second Outgoing communication UART, baud rate 9600, data bits 8, 1 stop bit, no check Temperature detection range: 0-99 ℃ Temperature detection separation rate: 10 Temperature detection accuracy: 1 ℃ Temperature detection response time: 31second Operating temperature: 0 ℃ - 50 ℃ Storage temperature: 30 ℃+85 ℃ Package Includes: 1x Analog TDS Sensor note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.