Amazon offers the Angelcare Baby Movement and Sound Monitor Deluxe Plus
, model no. 401-2PU-US-2SB, for $106.50
. With free shipping
, that's the lowest total price we could find by $25, although we saw it for $2 less in July. This baby monitor alarms if no movement is detected after 20 seconds. It includes two sensor pads, two parent units, and a nursery unit with thermometer and nightlight.