Wireless Digtal Floating Swimming Pool Thermometer Water Spa Temperature Guage Features:  Applied to  bath, swimming pool, spa pool such as water temperature measurement. With the record Maximum and minimum indoor temperature and water temperature. 433 MHZ wireless receive 3 channels water temperature. The alarm clock with snooze function. Waterproof and floating transmitter, suitable for both indoor& outdoor swimming pool. Specifications: Calendar: from January 1, 2015 to December 31, 2099 Water temperature range: - 40 ~ 60 degrees Indoor temperature range: -10 ~ 50 degrees Range of visibility Wireless transmission line (outdoors):100 meters Frequency: 433 MHZ Update rate: 90 seconds on the remote control and display control bench for 10 seconds Accuracy of measuring range resolution indoor temperature: - 40~ 140 ° F Water temperature: - 58 ~140 ° F Power display console:  2 x AAA 1.5 V alkaline battery (not including) Remote sensors: 2 x AA 1.5 V alkaline battery (not including) Instructions: 1. Receiver operating instructions: 1.1 normal mode: * Single click "MODE/SET" key to switch for ALARM and the current time * Long press "MODE/SET" button to enter setting MODE * Sheet according to the "MEM" button to check the temperature, the largest minimum value * Press the "MEM" button more than 2 seconds, remove all temperature, history * Single click CH / + button switch display different RF channel data * Long press "CH / +" button to remove the currently displayed data channels, and into the RF   receiver * Single click "CF / -" key to switch from the C/F * Single press the "SNOOZE" key backlight lighting for 5 seconds 1.2 Time setting mode * Single click "MODE/SET" button to switch the display MODE to the time pattern, switching sequence is: _:_ ring and ring for_time * In time mode, long press this button to enter setting mode * Project set will flicker at 1 HZ frequency * Set order:  hour xx minuter xx second(1-20 minutes, 5 minutes by default) exist * Set  result, single click "MODE/SET" * Single click "CH / +" key, set value increase step, long press is more than 2 seconds, then value forward by 8m/step * Single click "CF / -" key, set point to take a step backwards, long press is more than 2 seconds, the set point at 8m/ steps * When not operating buttons within 30 seconds, automatically quit setup mode, has set value will be saved 1.3 Ring ring alarm Settings * Single click "MODE/SET" button to switch the display MODE to ringing alarm MODE * Long press "MODE/SET" key to enter setup MODE * The project is set to 1 HZ flicker frequency * Set order: -xx hour-xx minute-xx second exist * Set result: single click "MODE/SET" * Single click "CH / +" key, set value increase step, long press is more than 2 seconds, then step value forward by 8m/s * Single click "CF / -" key,set value take a step backwards, long press is more than 2  seconds,then step value backward by 8m/s * SET  result, single click "MODE/SET" * When not operating buttons within 30 seconds, automatically quit setup mode, has set value will be saved * Display AL time, press "CH / +"to NO./OFF AL * When is ringing alarm, press the "Snooze/backlight" will delay ringing alarm, press the other key to exit the ring 2. The transmitter operating instructions: * "C/F" button: every press it, convert Celsius/Fahrenheit temperature at a time * "CH" button: every press it, convert channel at a time. There are three channel choice. Package Included: 1 X Wireless pool thermometer transmitter( not include battery) 1 X Wireless pool thermometer receiver 1 X User manual Note:This product is waterproof. After setting up. Requested the waterproof coil installed. Put the cover and tighten.