Easy Installation Surface mounting, easy 4-wire setup system includes rain cover, connection terminal, screws
materials. (Note: *1* We suggest testing the doorbell kits with our original cable before installation, and the distance between the units should not be too close while testing, or it will cause noise sound. *2* Please don't connect the power adapter directly with the outdoor unit or it will be burned. The power adapter should connect with the indoor unit)
About the extension wireThe extension wire is not included in the box, but we will provide the 4 pin connector for you connect the extension wires. You can use RVV4 (4 core wire) /Cat5/Cat6 wires to extend the distance for monitor to doorbell, monitor to monitor according to your need, maximum distance 100-200 meters.