*Medtronic Box of 5 Guardian 3 sensors - 7020A - 2025 EXPIRATION DATES no retail box - Fully Guaranteed!Save some $$ with slightly past or short date boxes of 5 guardian sensors. No retail box loose sensors. Fully guaranteed to work perfectly or refund replacement. Limited quantities. Medtronic Guardian Sensor 3 The Guardian Sensor 3 offers improved performance through the smallest & most comfortable glucose sensor from Medtronic. The Sensor is inserted just under the skin, accurately measuring glucose values and relays these values to your pump. It is