Kestrel Drop D1 Wireless Temperature Data Logger&hellip; Know your temperature conditions anywhere with the small, rugged, waterproof Kestrel DROP D1 Temperature Data Logger The EASIEST way to monitor and track temperature in almost any environment  wet or dry, indoors or out View temperature data wirelessly via Bluetooth Smart on your iOS phone or tablet with Kestrel Connect app Store thousands of data points and get months of logging on a single coin-cell battery  customize logging rate, connections and temperature alerts See, save and share data from multiple DROP loggers with just one phone or tablet  iOS 6 installed iPhone 4s, iPad 3rd generation or later