1. Calendar: 2000 from January 1st to 31st.20991.Calendar 2. Alarm clock with snooze function 3. Water temperature range: -40 to 60 degrees 4. Indoor temperature range: 0 to 50 degrees 5.433MHZ wireless receiving 3 channels of water temperature 6. Record the highest and lowest indoor temperature and water temperature Line-of-sight wireless transmission line (open air): 100 feet, ideal conditions: 300 feet. Frequency: 433 MHz Update rate: 90 seconds on the remote, 10 seconds on the console. Measuring Range Accuracy Resolution Indoor temperature -40 to 140F 2F 0.1F Water temperature -58 to 140F 2F 0.1F Power consumption Display console: 2 AAA 1.5V alkaline batteries Remote control sensor: 2AA 1.5V alkaline batteries Battery life: at least 12 months (using lithium batteries, minimum 12 months in cold water climate base station thermometer sensor remote Special reminder: This product requires waterproofing. After setting. The waterproof ring is required to be installed. Tighten the cover.