Features: 1.2.4GHz digital wireless transmission. The transmission signal is stable, with up to 250M Open space transmission. 2.Built-in MIC and speakers for two-way audio monitoring. Both the receiver and the camera have built-in microphones and speakers. 3.High sensitivity, is easy to hear the cry. And the lights will be turned on to inform parents. 4.Keep the transmitter approximately 1.5~2.0m far from the baby. Easy to pair, plug and play. 5.Both the parent unit and the infant unit can be powered by a DC 5V or 3 * 1.5V AAA battery. Specification: Features:_x000D_ _x000D_ 2.4GHz digital wireless transmission. The transmission signal is stable, with up to 250M Open space transmission. _x000D_ Built-in MIC and speakers for two-way audio monitoring. Both the receiver and the camera have built-in microphones and speakers. _x000D_ High sensitivity, is easy to hear the cry. And the lights will be turned on to inform parents. _x000D_ Keep the transmitter approximately 1.5~2.0m far from the baby. Easy to pair, plug and play. _x000D_ Both the parent unit and the infant unit can be powered by a DC 5V or 3 * 1.5V AAA battery. _x000D_ Customized volume adjustment, two-way intercom, support for data encryption. _x000D_ _x000D_ Specifications:_x000D_ Material: ABS plastic_x000D_ _x000D_ Color: white _x000D_ Voltage:110~240v _x000D_ Plug Type:US Plug,UK Plug, AU Plug(optional) _x000D_ Baby Machine_x000D_ Transmission Frequency: Ism 2400~2483MHz_x000D_ Transmission Power: 17dBm_x000D_ Modulation Type: FSK_x000D_ Power: DC5V_x000D_ Power Consumption: 70mA_x000D_ Battery: 3 AAA batteries_x000D_ Operating Temperature: -10 ~ +60_x000D_ Storage Temperature: -40~+ 70_x000D_ Parent Machine_x000D_ Transmission Frequency: Ism 2400-2483MHz_x000D_ Transmission Power: 17dBm_x000D_ Receiver Sonsitivity: -85dbm_x000D_ Modulation Type: FSK_x000D_ Power: DC5V_x000D_ Battery: 3 AAA batteries_x000D_ Power Consumption: Poma_x000D_ Operating Temperature Range: -10 ~ +60_x000D_ Storage Temperature: -40~+ 70_x000D_ _x000D_ Package Included:_x000D_ 1 * Baby Unit_x000D_ 1 * Parent Unit_x000D_ 2 * Adapter_x000D_ 1 * Instruction_x000D_ _x000D_ Notes:_x000D_ 1.If it will not be used for a long time, please remove the battery or the power plug._x000D_ 2.Do not use an external power supply when using a normal AA battery._x000D_ 3.The rechargeable battery can only be a 1.2V AA NiMH battery. _x000D_ 4.Do not operate at high temperatures and high magnetic fields._x000D_ _x000D_ 5.Please note that the new type and old type of this product will be sent _x000D_ randomly, and make sure you will not mind before ordering.