This particular unit is produced by bebesounds - a reliable baby product manufacturer.
I really like the sensor that sounds an alarm if no movement is detected after 20 seconds. This sensor pad is designed to detect even the slightest movement that is created as a result of baby breathing. It is placed underneath the crib mattress, so it doesn't get in the way.
Here's a few tips you should keep in mind:
remember to turn the unit off when taking your baby out of the crib (otherwise the alarm will go off)
even when plugged in I still recommend inserting the AAA batteries
occasionally there may be false alarms - but you never know, so take them very seriously
get comfortable with the indicator light on your unit - I call it peace of mind
Compared with other similar units this one is reasonably priced. Last time I checked Amazon had it for $99. That's with the $20 discount. I think that's a great price for the sensor and monitor combo. It also comes with two parental units
As you can see these baby monitors are reliable little devices. I am happy that I placed one of the movement sensors under Samantha's organic crib mattress. I can't imagine what might have happened if I didn't.