Elebinke Wireless Intercom
Elebinke Wireless Intercom Doorbell-Waterproof Portable Voice Intercom Doorbell with 2000mAh Rechargeable Battery, 38 Chimes, 1000M Long Range & 3 Level Volume (1 Outdoor/2 Indoor) Wireless voice intercom doorbell: 2NI1 doorbell, also can be used as portable intercom, effective range 1KM/3200FT in open environment, strong and stable wireless signal will not let you miss any visitors, 3 levels of adjustable volume...