Features: 1.2.4GHz wireless digital transmission with stable transmission signal. 2.Internal microphone and speak for two?way talk and audio monitoring. 3.High sensitivity, allows baby's crying to be easily heard with light open to inform parents. 4.Easy to be matched, plug and play. 5.Supports data encryption and volume adjustment. Specification: Features:_x000D_ _x000D_ 2.4GHz wireless digital transmission with stable transmission signal. _x000D_ Internal microphone and speak for two-way talk and audio monitoring. _x000D_ High sensitivity, allows baby's crying to be easily heard with light open to inform parents. _x000D_ Easy to be matched, plug and play. _x000D_ Supports data encryption and volume adjustment. _x000D_ Open space transmission range up to 250M. _x000D_ _x000D_ Specification:_x000D_ Condition: 100% Brand New_x000D_ Material: ABS_x000D_ Color: White_x000D_ Optional Plug Type: US 100-240V, EU 100-240V, UK 100-240V, AU 100-240V _x000D_ Power Supply Voltage: DC 5V_x000D_ Transmission Frequency: Ism 2400-2483MHz_x000D_ Transmission Power: 17dBm_x000D_ Modulation Type: FSK_x000D_ Baby Unit Power Consumption: 70mA_x000D_ Paretn Unit Sensitivity: -85dbm_x000D_ Battery: 3*AAA(No.7) for each(Excluded)_x000D_ Working Temperature: -10~+60_x000D_ Storage Temperature: -40~+70_x000D_ Baby Unit Size: Appox. 62*40*103mm/2.4*1.6*4.1in_x000D_ Parent Unit Size: Appox. 62*45*103mm/2.4*1.86*4.1in_x000D_ Package Weight: Appox. 347g/12.2oz_x000D_ _x000D_ Package List:_x000D_ 1 * Baby Unit_x000D_ 1 * Parent Unit_x000D_ 1 * AC Adaptor for Baby Unit_x000D_ 1 * AC Adaptor for Parent Unit_x000D_ 1 * English User Manual_x000D_ _x000D_ Note:_x000D_ 1. Please remove the battery or power plugs when it's not used for a long time._x000D_ 2. Please do not use any external power supply while using ordinary AA batteries in case of any danger._x000D_ 3. The chargeable battery can only be 1.2V AA NiMH battery, please do not charge the battery to avoid reducing battery life when not used for a long time._x000D_ 4. Please do not operate in high temperature and high magnetic field._x000D_ _x000D_ 5. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.