Sleep monitor for newborns

Clodagh
Hi guys,
So me and my OH are expecting our first baby in June and we are looking into a type of sleep monitor to make sure baby is okay during the night.
Would love to get some opinions on these if you have used them before or if there maybe isn't a need for a monitor.
Would also be very happy to hear other brands.
Thanks in advance,
Clodagh and Martin

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