Maverick OT-3BBQ Barbecue Chamber Thermometer Bar-B CheckThe Maverick Digital BBQ Thermometer lets you know the constant average temperature inside your grill throughout the cooking process. It recalculates this average every 10 seconds and compares it to the temperature target you have preset. It then alerts you if the temperature swings more than 15F (9C) above or below your target temperature. It updates this average every 10 seconds. The Digital BBQ Thermometer measures the temperature by using a probe Sensor with grill rack clip and aninsulated metal wire that passes between the grill hood back to the unit.