Intelligent design: The voice intercom doorbells adopt an intelligent and humanized design, with intercom lighting and power lighting display, and the operation is clear at a glance. Wireless distance: The barrier-free distance of the wireless voice intercom doorbells is about 1000 meters, which does not require internet or wiring, and can be turned on and used. Working time: Both the outdoor unit and the indoor unit use 2000mAh batteries, and the outdoor doorbells work normally. It can work for about 8 months by pressing 5 times a day and talking for 2 minutes at at a time, and the indoor doorbells work for about Excellent Chip: The wireless voice intercom doorbells adopt a special intelligent intercom chip with strong penetrating power, which can be used from the 1st to the 8th floor. Wide Application: This wireless intercom doorbell is widely used in homes, hotels, villas, factories, hospitals, etc. 1、Wide Application: Wireless intercom doorbells is widely used in homes, hotels,