Baby monitor Phone Wireless Infant Baby Alarm Sleep Cry Detector Monitor Safe Call Watcher Reminder Lovely Snowman Design Applications: When the baby sleeping in the bedroom and the parents doing housework or watching TV outside the bedroom， use this device to take care of the baby. If she is awake and crying， the transmitter near the baby will send a signal to the receiver to remind the parents. Distance: 30-40 meters. 2 level sensitivity for your choice. Features: Brand new and high quality. Lovely snowman wireless baby cry detector monitor watcher alarm. Easy to use with cord strip. No wires or cables required. Install two AAA batteries for receiver and transmitter， move the switch to "1" and "2" ("0" on - transmitter is OFF， "1" is low detecting sensitivity， "2" is high detecting sensitivity， "0" on receiver is OFF， "1" is low volume， "2" is high volume). Place the doorbell chimes near baby， the receiver can be placed or carried within the range of wireless signal receiving (the detecting light would twinkle every 5 seconds)， in view of electricity saving and the possible effect of wireless to baby， you can switch "Test ON" to "Test OFF" to turn off the test signal which won\'t be sent until the baby cries. Humanity design， once the baby cry or other noise occurs， the receiver may start to make electronic crying noise and the transmitter won\'t. Can be used for the elder， disable\'s care too . Specifications: Max reception range: about 30-40m. Receiver: 80 (L)*40 (W)*100 (H) mm Weight: 48g (battery excluded) Battery: 2 x AAA batteries.(Batteries not included.) Transmitter: 80 (L)*40 (W)*100 (H) mm Weight: 48g (battery excluded) Battery: 2 x AAA batteries.(Batteries not included.) Frequency: 433.92MHZ Beep sound: 90 DB for receiver. Package Included: 1 x Transmitter 1 x Receiver NO Retail Box. Packed Safely in Bubble Bag.