The device is a quite a lot of security in relation to breathing interruptions of the baby, s because the sensor mat recorded even the most slight body movement and, at play in apnea, which are then recognized by immobility as an alarm on the receiver.
This gives you already a good sense of security and surveillance of the sleeping baby, even though we once sat upright at night in bed when the alarm - probably unjustified started.
Is only negative, the hidden and difficult-to-use on / off switch of the transmitter unit.
Otherwise, a strong buy recommendation for the product. Toll.