Wireless Intercom Doorbell Portable Door Chimes with Receiver and 1 Push Button Operating at 600-feet Range High Volume | Безопасность и

WIRELESS INTERCOM DOORBELL - This doorbell supports talk between inner doorbell and outdoor bell.
But the outside unit has to ring before the inside unit can talk.
Step 1: visitors have to hit the outdoor bell button first, then the receiver will get ring.
Step 2: Hold the receiver button and talk. Step 3: Release receiver button after over, outside button will get voice.
Step 4: Visitors can talk back by holding the outdoor bell button.
VOICE DOOR CHIME - The wireless voice intercom doorbell is an upgraded version of the ordinary doorbell, it supports talk between Push Button Transmitter and Receiver.
When your loved ones stay alone at home, they can speak through the doorbell in advance to know who is the other side, and then decided to open the door.
LONG WIRELESS DISTANCE UP TO 600 FEET - Strong and stable signal transmission in big house, cover range up to 200M(without any obstacle, any block).
It is super convenient to answer the doorbell of the visitor at any distance in your room.
EASY INSTALLATION - The doorbell can be fixed on the wall with the use of adhesive stickers.
You can place it in the bedroom, kitchen, living room, study room, everywhere you want.
The devices can be applied to homes, apartments, hotels, supermarkets, and office space.
Color: Silver Black
Material: Metal
Size: 4 x 2.4 x 0.5inch
Working temperature: -20 Celsius~55 Celsius
Wireless distance: 200M(without obstacle); 50-100m(with obstacle)
Frequency: 467.64MHZ
Indoor-bell Power Supply: Rechargeable Li-ion battery
Outdoor-bell Power Supply: 4 x AAA battery(Not included)
Package Contents: 2 / 4 x Wireless Intercom Doorbell
1 / 3 x receivers
1 x launcher
1 x English manual
1 x screwdriver
1 x usb cable
Only the above package content, other products are not included.
Note: Light shooting 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.