Amazon has the iDevices iGrill Mini Thermometer for $24.40 (39.99 – 39% instant savings) with Free Shipping for a limited time.

Using this Bluetooth Smart grilling thermometer you’ll know when your food is ready from your mobile device. Choose from dozens of preset temperature alarms or create your own in the iDevices Connected app based on what you’re grilling/smoking and head back inside while your meat cooks. Featuring a 150′ Bluetooth Smart range, 150-hour battery life (1 CR2032 battery required), a temperature LED indicator, magnetic mounting and two viewing angle positions, this is the ultimate gadget for any level griller. Compatible with iOS devices running iOS7+ and most Bluetooth Smart Ready Android devices running 4.3+. One year limited warranty on the device and a 90-day warranty on the meat probe.