⚡【Lifetime Usage】:- We have 50 + years experience for producing intercom, our factory is one of the leaders in pushing this industry. We only produce product of superior quality to give the buyers the best using experience. Our wireless intercom has passed all the professional certificate, like FCC, CE, Rosh, etc. In order to show our confidence of our products, We provide a worry-free purchase to let you no need to worry about any quality problem | ⚡【Multiple Channels and Function】: - This wireless intercom system for home has 10 channels (made of Advanced anti-interference technology) and 3 secret digital codes to meet your different communication requirements in different situations, widely used in house, office, gate, restaurant, etc. Our intercom system has 4 main functions: monitor, talk, Group and call. Widely used at home or office, make your life and work communication become more convenient | ⚡【Long Range + Radio Sound】: - Our new release long range house intercom system is inserted superior crisp Chip to provide you the crystal sound quality and prevent interference. The effective distance of this intercoms wireless is 1 to 1. 5 mile up to the actual circumstance. Perfect for Department to department, room to room, building to building communication | ⚡【No Need Battery】: - This wireless intercoms is powered by a USB cable, which is easy for connected by power bank. No need battery charging or phone wire on the wall. Suitable for both indoor and outdoor usage, and help you keep your space in original shape, clean and you can take it to any place you want | ⚡【What you will get】: - 4 x wireless intercom system, 4 x USB cables, 4 x USB wall chargers, 400% satisfied service. Please contact us if you have any question in usage or need any help, We are very willing to solve all the problem for you.