Have had a go of sensors with use of my 640 Medtronic pump. Night time low bg NO MORE 😉. It needs adjusting but "I am over the moon". It stops the pump giving me insulin & then restores when in set limits. Very happy with Medtronic 😎😉. Over the years I have had a few hypos & am not freighted of them but a pump with this is like a 6 month holiday