1. Power supply voltage: the receiver supports AC100-240V voltage, optional Eu plug, US plug, UK plug, AU plug 2. AC doorbell: Cell battery included (CR2032,DC 3V) for the transmitter 3. The wireless distance on the open space is 300M 4. Anti-interference will not cause cross noise 5. Receiver intelligent 7 levels RGB Indicator LED 6. 5 adjustable volume, 60 ringtones optional 7. The transmitter can be connected to multiple receivers 8. Color: default black, white to be customized 9. IP44 waterproof 10. Memory Function. Retain chime settings during power outages

1 What Do you Supply?Video Intercoms for Villa&BuildingVideo Doorbell CameraVideo Peephole CameraAudio Intercom Phones2 What kind of OEM/ODM service do you provide?1) logo Print2) UI Interface3) Functions and Softwares4) Material and Structure5) Packaging Box6) Other Ideas on Products3 Can we order sample before the mass production?Yes.We will arrange the sample order and shipment to your country directly.4 What's the order leading time?Sample order: 1-3 daysBulk order: Current Stock 7-30 days; Customized order as agreement5 How about your after-sale service? Customer firstProduct 2 years warrantySpare parts for replacementEngineers with 10 years experience in the field of video intercoms to provide technical support anytime6 How about your quality control? PCB board 90% made by SMT, to low down defective rateAging and test at least 24hours to ensure the stabilityQuality inspection 100% piece by piece before delivery7 What certificates do you have? CE, FCC, ROHS, ect. Any certificates provided as requiredWelcome to Shenjiuding factory, we have a professional team waiting to help you!