We are professional Manufacture of 2.4GHz wireless products. We established the factory in 1996. With experienced engineer and technician, we produce high quality products and provide good service to our customer. Our products have gained various International Approvals, such as FCC,UL,CE,GS,R&TTE and LVD, etc. Our products adopt the latest 2.4GHz high frequency wireless communication technology to deliver consistently sharp audio signals and video images.   Our main products include:  2.4GHz Wireless Surveillance System (Baby Monitor)(WOS-817/WOS-817A) 2.4GHz Wireless A/V Transmission System (WOS-825A/B/C) 2.4GHz Wireless Camera System (WOS-826/WOS-826C) 2.4GHz Wireless B/W and Color Camera (WOS-815/WOS-815C) 2.4GHz Wireless Video Intercom Doorbell (WOS-823B/WOS-823C)  1.Our products are mainly exported to USA and European countries such as France, Switzerland, Spain, Czech, etc. We have also exported our products to South Africa, Mexico, Malaysia and Thailand.  2. Now we are supplying goods to France Carrefour (家乐福）Supermarket, which is the second largest retailer in the world, while the first large one is Walmart (沃尔玛). Carrefour adopts the third party inspection, they hire the professional Inspection Company--API to inspect goods. So, we can guarantee the quality of our products. If necessary, you may visit our factory and we can show you their Inspection Report. 3. Our products have got various International Approvals, such as FCC,UL,CE,GS,R&TTE and LVD, etc.  4. We would like to specially recommend WOS-823B to you since we have got Chinese Patent for this model, furthermore, we also got Silver Award of HKEIA Award issued for Outstanding Innovation and Technology Products at 2003 Hong Kong Electronics Fair. So, as far as 2.4GHz Wireless Video Intercom Doorbell is concerned, we are absolutely unique in this field.