Attention: Welcome to my shop! We ship the product from China, the delivery time is 7-14 days!Features:*2.4GHz digital wireless transmission, stable transmission signal.*Built-in MIC and speaker for two-way audio monitoring.*High sensitivity, the crying voice is easy to be heard and the lamp will turn on to inform parents.*Easy pairing, plug and play in.*Position the transmitter at a distance of about 1.5-2.0 meters from the baby.*Both parent unit and baby unit can be powered by DC 5V or 3*1.5V AAA battery( battery not included).Specification:Baby UnitTran Smission Frequency:Ism 2400-2483MHzTran Smission Power:17dBmModulation Type:FSKPower Supply:DC5VPower Consumption:70mAOperating Temperature range:-10~+60Storage Temperature:-40~+70Dimensions:62mmX40mmX103mmWeights:75gParent Unit :Tran Smission Frequency:Ism 2400-2483MHzTran Smission Power:17dBmReceiver Sonsitivity:-85dbmModulation Type:FSKPower Supply:DC5VPower Consumption:PomaOperating Temperature range:-10~+60Storage Temperature:-40~+70Dimensions:62mmX45mmX103mmWeights:78gRemarks:Please take out the battery or power plugs when you do not use it for a long time.Please do not use external power supply when you use ordinary AA batteries,in case any danger.Rechargeable batteries can only be 1.2V AA Ni-MH battery,please do not charge the battery in case reducing battery life when you do not use it for a long time.Please do not operate in high temperature and high magnetic field.Packing:1Transmitter1Receiver2Power Plug1Manual User