TempPro TP211B 2-Pack Digital 500-ft Wireless Pool ThermometerTempPro TP211B Digital Wireless 500ft Pool Thermometer High Accuracy: Equipped with a highly precise sensor, this floating pool thermometer provides 0. 9F (0. 5C) accuracy within a range between 32F and 140F. More than capable of handling temperatures between 40F to 158F, the TP211B is ideal for use with ice baths, cold plunges, baby baths, hot springs, and aquariums. 500FT Long Range Monitoring: Featuring stronger, more stable RF technology, this