I accidentally purchased two, so I am selling a new, unopened one. This AI-powered baby sensor pad uses four motion sensors to detect subtle movements of the mattress, keeping your baby safe. (Note) This product requires the separately sold CuboAi Plus or CuboAi Baby Monitor (3rd generation) to use. - Brand: CuboAi - Product Name: Baby Sensor Pad - Condition: New, Unused Weight: 456g WiFi: Frequency: 802.11b/g/n/ac 2.4GHz/5GHz (WPA, WPA2 encryption supported), Wi-Fi Max Speed: AC433 Range: 300 feet line of sight Battery: 4AAA Place it under the mattress. The mattress thickness must be between 2.36-5.12 inches (inch) or 6-13 centimeters (cm) for the sensor to function correctly and safely. *Compatible with CuboAi Plus or CuboAi Baby Monitor (3rd generation). Baby Sensor Sensor Pad Cubo