Daytech HI01 HI03 Wireless Intercom Waterproof Door Bell For Home Two Way Communication Intercom Doorbell

Features:
RESPOND IN REAL-TIME
With built-in microphone and speaker, a wireless doorbell provides you real-time clear two-way audio. So you could speak directly to the visitors who approach your front door via this wireless intercom doorbell without having to get up and answer the door. 
ANTI-THEFT & EXPANSION
The wireless intercom doorbell is expandable, so you can extend nearly any indoor or outdoor system. The outdoor wireless intercom transmitter equipped with screws, allow you to fix it on the wall to against anyone take it away.
ANTI-INTERFERENCE &MULTIFUNCTIONAL
This wireless doorbell uses a wireless intercom to avoid being affected by WIFI disruptions, and it also will not interfere with other equipment in your home or those of your neighbors. Buy two receivers and use them as a set of walkie-talkies!
LONG RANGE & ADJUSTMENT SOUND
 This wireless doorbell transmits at a distance of up to 1/2 Mile! Customize your doorbell with 10 kinds of chimes and 3 volume levels!
BUILT-IN RECHARGEABLE BATTERY
This intercom doorbell is waterproof even in bad weather conditions like snow and rainstorms. Features low power consumption, built-in 2800mA battery!

How to use the wireless intercom doorbell?
Step 1: Set the same channel (A, B, or C) for both the indoor and outdoor machine;
Step 2: Long press the ON/OFF button of the indoor machine to turn it on;
Step 3: Attach the outdoor machine to the exterior of your front door. Once the chime rings, click the ON\OFF button or the TALK button of the indoor chime to stop the ringing. To speak to the visitor, press and hold the TALK key to communicate with the outdoor device. Release the TALK button after speaking to listen to any response from outside. 
Noted
1.The factory setting of the indoor machine is in the shutdown state. After receiving the goods, please long press ON/OFF key button for 3 seconds to turn on the indoor unit.
2.Outdoor machine will return to sleeping mode if it does not detect action within 30 seconds. Please click the CALL button on the outdoor machine to activate it. Each conversation must be initiated by the outdoor machine, and then the indoor machine can talk with the outdoor unit after receiving the ring.
3.This wireless intercom doorbell is a unidirectional transmission system with the same frequency. You cannot speak to your visitor and listen to them at the same time. Please wait until the visitor is done speaking to press the TALK key to respond.
Troubleshooting
Problem 1: Does not work 
Possible solution :
Check if the indoor machine turned on. If not, please long press the ON/OFF key of the indoor machine to activate it.
Check if both devices are charged. Charge devices at least 1 hour and try again.
Problem 2: Cannot hear response 
Check if the 2 devices are on the same channel. If not, set them to the same channel.

Package
Outdoor Machine*1
Indoor Machine*1
Waterproof Cap*1
USB Cable*2

Factory Warehouse House Mansion Office Shop Backdoor