The ChefAlarm from ThermoWorks (the folks behind the nearly universally lauded Thermapen) is a great Thermometer and Timer Combo for homebrewing. It tracks both highs and lows, has both high and low alarms and has a built in timer. It has an easy to read screen with backlight.
ThermoWorks has their great ChefAlarm Thermometer/Timer Combo marked down 30% as part of an early access Black Friday Sale. No coupon code is required. Check product page to see if you can still get in on this.
Price, promotions and availability can change quickly. Check the product page for current price, description and availability