Or change the channel code. Note: 1.The intercom system is a real-time communication system which has no memory or storage function. Increase/lower volume too! Or, change your intercom to another channel or code. 5. Unit doesn't work----Try the units in a different location. Features an enhanced anti-interference and can work with other intercoms with the same digital channel code! Or, change locations by using Power Bank and moving to other locations for better reception and transmission. We suggest setting another channel or code to avoid interference. 3. A tip for setting your home intercom system For example, let’s say you have a 4 station intercom system for your home for different rooms. An enhanced signal with 5280 feet range helps ensure crisp sound quality. The most trusted wireless intercom system for home ! [ 10 Channel and 3 Digital Code ] 10 channels and 3 digital codes in a secure wireless home intercom system . Features an enhanced anti-interference and can work with other intercoms with the same digital channel code [ 10 Channel and 3 Digital Code ] 10 channels and 3 digital codes in a secure wireless intercom systems. Carlsle Resstance Bands | Resstance-bands Security Systems For House Wuloo Wireless Intercoms System For Home Office WL888 ( 2 Packs, Black Intercoms Wireless For Home Wuloo Intecoms Wieless Fo Home 1 Mile 5280 Feet Ange 10 Channel Wireless Intercom System For Home House Business Office Room To Room Intercom Home Communication System 2 Packs Black Additionally, you cannot speak to another user if they are speaking at the same time. 2. Please note that you will need to set the same channel and code if you want 2 intercom stations to receive communication. You can set all 4 stations with the same code A(code A, B or C are choices), then you set different channels for all 4 stations. If your system receives interference, you can change it to another code for all of your stations without changing every station's channel making this a very convenient option. 4. We sincerely suggest that you can read User Manual before you use our intercom system. Warm Tip: All of our products have passed FCC certification, the FCC ID for this product is 2AOBR-666, you can use it without any worries. In this case, you can just click a channel number to call others without set code because your codes are all the same. For example, your neighbors may be able to interfere with your intercom system. [ Supported by Power Bank for Outdoor ] This device is compatible with Power Bank (5V 1A) making it easy to take these intercoms any place you want. Is it connected properly? Or change AC adapter to test. 2. Cannot receive response---- Please make sure the intercom set to designated channel? If not, be sure to release TALK when you are not speaking into the intercom. This intercom system is easier to use than others with user-friendly multi-functions and included step-by-step instructions! The most trusted wireless intercom system for home!