Features:  1. Radio transmission circuit and coding technology to solve the problem of signal blocking.  2. A variety of temperature modes can be adjusted, suitable for different scenarios.  3. Ultra-low power consumption, long battery life.  4. With low voltage monitoring and prompt function.  5. Regularly send online reports to the host.  6. Anti-demolition design in the professional security field.  7. Wireless transmission of data signals, mobile phone remote monitoring.  8. Split design, high reliability.    Specification:   Communication method: ZB;  Dimensions: 50 x 18 mm;  Working temperature: -10~50℃;  Power supply: DC 3V (CR2032 battery) (not included);  Function: A sensor used to detect the state of water immersion in the environment;    Package included:  1 x Water sensor