1. The digital swimming pool thermometer has a high-precision temperature sensor and a stronger and more stable signal antenna, ensuring accurate temperature readings. 2. The real-time temperature of the water area where the sensor is located and the indoor temperature where the host is located can be displayed on the same screen, as well as the optional 12/24-hour format time. 3. Support recording of the highest and lowest temperatures for the day. 4. New shell structure with improved waterproof performance. 5. This product supports up to three channel sensors working simultaneously. 6. Suitable for various occasions, such as swimming pools, fish tanks, bathtubs, hot springs, spas, etc. Specifications: Time display: 12/24 hours; Temperature units available: ℃/℉; Water temperature level display; Record of highest/lowest outdoor temperature; The temperature detection range of the indoor host is 0 ℃ -50 ℃, and it is updated every 30 seconds; The temperature detection range of the outdoor water temperature gauge is -40 ℃ -70 ° C; Supports up to 3 sensors (1 included in the package) Power supply voltage: 2.7V-3.3V (battery: host 2x1.5V AAA battery, water temperature gauge 2x1.5V AAA battery, batteries not included). Colour:White Material:plastic Package Contents: 1 * Pool Thermometer 1 * Host 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection 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.