SANZUCO Intercoms Wireless for Home, Upgraded 5300ft Intercom 9 Channel 2 Code, Full Duplex Hands Free Talk Wireless Intercom System for Home Elderly Office with Auto Answer(6Packs, Black)

Truly Duplex, just like talking on a phone. I purchased the 4 pack as my wife has shoulder surgery, so during her 6-week recovery I was sleeping upstairs in our spare bedroom and was also working from home in our computer room, so we needed good communication if she needed assistance. These worked perfect. each device has its own assigned number so she could call me directly or if she wasn't sure where I was, she could do a group call. If she called directly, all she had to do is press the number button for the channel I was on, it would ring about 3 times at my device, then auto-answer we didn't have to press any button to simply have a real 2-way conversation. I will also add that the ring volume was adjustable but at the loudest volume it could wake me up without wearing my hearing aids I have only 60% hearing. Another good feature I really liked is if we disconnected the power to relocate a device it would retain all of its setting, so I didn't have to reset it to Auto-Answer mode -very convenient. We like them so much so now my wife has recovered were going to permanently install them throughout the house, basement, garage, kitchen and home office. They are perfect. Very highly recommended.

Works great, I used them within 500 ft and had no problem

These intercoms are perfect. The reception is so clear and the volume is great. I don't think I could find another set that would be better than these. My only issue is they didn't come with any type of manual or instructions. We looked them up on line, but we shouldn't have to. They should have been included.

They tend to have static even inside the house. Could be a home wiring problem

Why did you pick this product vs others?: I needed along distance intercom that would work between buildings. Our cell phone would always cut out and we thought an intercom or walkie talkie would work better. Functionality: I needed something that would allow hands-free answering. Ease of use: Very easy to set up and use Sensitivity: Long distance clarity and ability to work through the walls of multiple buildings was a must. This unit works pretty well. Call is sometimes a little static-y but considering the obstacles, it’s really not bad and we can still hear and understand each other.