SOLAR POWER WATER THERMOMETER - An essential floating pool thermometer for measuring water temperature in a swimming pool, hot tub, jacuzzi, pond, etc POOL THERMOMETER MATERIAL - The swimming pool spa floating thermometer is made of , polypropylene and silicone rubber Pool thermometer floating rugged, shatterproof ABS plastic,last from season to season and suitable for both indoor and outdoor use. ACCURATE READOUT - Swimming Pool Thermometer is with high-precision temperature sensor which ensures an accurate temperature readout, providing a flexible temperature reading range from 0 to 50.It is a convenient way to monitor the temperature of bath water and outdoor pool. OCCASIONS - The Summer is coming Now you can see from the sofa, whether the water in the pool is pleasantly warm. Floating thermometer is ideal for family pools, spas, pool spa, hot tubs, aquariums and fish ponds. Operation: 1. Use screwdriver to back off two screws on the back, unbolt the cover of battery, put one LR44 battery into the battery case, the machine will be on, Then screw on two screws. 2. Tie one side of the nylon cord on the ear of the plastic crust, the other side of nylon cord tie on the bank side of swimming pool, and put the machine into the water. 3. This time, the machine starts to measure the temperature, and display the value of the temperature on the LCD, it can switch the display with C or F by the ON\/C\/F key . 4. After 3 minutes the LCD of machine will be off , put the ON\/C\/F key can display again .if the machine does not work, press RESET key to restart it. Notice: 1. Do not drop the machine, when using .if not, the LCD screen will be broken. 2. When the LCD display not clear, please change the battery. 3. The battery of changed, please put it into appointed dustbin, abstain polluting environment.