Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you!Features: [Long Range & Stable Connection] Advanced wireless technology ensures a strong signal up to 1000 feet (in open areas), with no interference from walls or obstacles. Perfect for homes, offices, and large properties. [32 Melodies & LED Alert] Choose from 32 pleasant chimes and customize your doorbell sound. Bright LED flash provides visual alerts for the hearing impaired or noisy environments. [Easy Installation & Adjustable Volume] No wiring needed-just mount and use! Adjustable volume (70-115dB) lets you set the perfect loudness for any situation. [Memory Function]The door bell remember all your settings when the power is off, when you use it again, the memory function restore the sound and volume of the last time you used it, and there is no need to select the sound and volume again [Wireless Doorbell Kits] contains: 1 remote transmitters and 1 smart doorbell receivers. This doorbell wireless is great for large homes, apartments, offices & classroom, it can also be installed in your kid's bedroom to wake them up in the morning or notify them to come for dinner. Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the , the Philippines,Taiwan and so on. Voltage: AC100-240V Color: White Material: ABS Package Contents: 1 x Door Bell Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.