An efficient communication tool: Our wireless doorbell paging system enhances your guest service. Ideal for busy environments like restaurants, hotels, bars, and cafes, this system ensures your staff can respond to guest needs promptly and avoid delays. Easy to install and operate: This wireless system is easy to set up, requiring no complex wiring, making it ideal for any service area. The intuitive interface on the display receiver makes operation even more convenient. Versatile: Whether you manage a hotel lobby or a cafe, this paging system improves your service efficiency. The powerful wireless signal provides wide coverage, ensuring every call is answered. and reliable: Designed to withstand the rigors of commercial environments, our doorbell paging system is and reliable, minimizing downtime and maintenance costs. Operating frequency: 433.92 MHz Volume adjustment: 16 levels Call log: 15 queued records Registered capacity: 166 Scene switching: 3 selectable scenes Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage: AC100-240V Color: Black Material: plastic Package Contents: 1 * Doorbell Host 4 * Pager 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.