Blink Gen-2 has an optional sync module 2 to protect the battery from draining and manage up to ten devices. This sync module manages the system, works as a standalone in event response, and provides local storage. There is a USB port at its bottom that supports 256 GB USB to download the recordings without a subscription. Sync module requires a stable 2.4GHz wifi connection to support the doorbell functions. Poor wifi connection puts a load on the doorbell and drains its battery. Blink doorbells have 1.5V non-rechargeable batteries that last for two years. Place the router 3 to 10 feet away from the doorbell for the best connection. Sync works with both wired and wireless doorbells. Wireless doorbells also have an electric power option that rings the chime. This guide explains the Sync module and its compatibility. Follow these tips to avoid troubleshooting and battery-draining problems.

Which Blink Doorbells Require a Sync Module?

Sync module is optional, though Blink Video Doorbell first and second-gen rely on it. This system uses low-frequency radio to initiate two-way communication and conserve the battery. It reduces the dependency on the cloud and protects the user's data from malware.

What Are the Wi-Fi Requirements and Connection for the Blink Doorbell? 

Blink doorbell requires a 2.4 GHZ wifi network, and it is not compatible with 5 GHZ like Google Nest. This doorbell requires fast-speed internet with 2 Mbps upload speed per Blink device. High-speed internet provides quality videos and captures clear recordings. Make sure the internet uses WEP, WPA, WPA2 (with TKIP SSID), or WPA3 security protocols and DHCP/IP configuration. Avoid connecting Blink to public wifi or hotel internet, as it's not reliable and leads to latency issues. Place the router near the doorbell and run a test to check if it works accurately. The sync module connects to the router for the internet to send video clips to local storage. The doorbell connects directly to the sync module and makes Live View & Two-Way Audio faster.

What Is the Effective Range of the Sync Module?

The average range of the sync module is 100 feet. It works even when 30 meters away from the Blink doorbell and router. Sync Extended Range (XR) has an effective range of 250 feet for 4 cameras, and Extended Range Plus (XR+) is 400 feet. Extended Range Plus affects the video resolution and disables the two-way communication system. Obstructions like walls, bricks, or metal doors affect the range of the sync module and increase the battery drainage. Make sure to keep the router, doorbell, and sync module within a 20 to 30ft radius. Three-bar rule of the Wi-Fi network says that three wifi network bars are ideal for a stable connection from the camera to the sync module.

Can You Use Multiple Sync Modules in One Home?

Yes, multiple sync modules can be installed in a home via the Blink Home Monitor app. Tap on the "+" icon in the Blink app, click "Sync Module," and then follow the on-screen prompts to create a "New System." Name this system the backyard, hallway, or garden for easier management. Using more than one sync module increases the number of supported devices. It makes it easy to arm and disarm the group of devices at once. Homeowners can arm the outdoor devices 24/7 and indoors only when they are away to conserve battery. They cover a larger area and provide better signal strength. Dragging or dropping a component from one module to another does not work. Delete the camera first and then re-ad in the desired module with the QR code on its back. Blink Plus Plan allows users to manage unlimited devices at once from the app.

What Are the Storage Options With and Without a Sync Module?

Here are the storage options with or without a sync module:

1. Without Sync Module: Users have to purchase the Blink premium subscription plans to upload the recordings to the cloud. 
2. Sync Module 2: Sync Module 2 provides a local storage option with a USB port at its bottom. Users insert the 256 GB USB to download the recordings, or they can purchase the premium subscription for cloud storage.

What Are the Limitations of Blink Wi-Fi and Sync Module Setup?

Blink wifi and sync module setup runs on a 2.4 GHZ wifi network. They record event responses instead of continuous live view, and a sync module is required for local storage. The overall two-way communication, recordings, camera sensors, and alerts depend on a stable wifi connection.

How Can You Improve Wi-Fi Performance for the Blink Doorbell?

Set up the router near the doorbell and sync module for better connectivity and to avoid lags. Avoid placing the router near metal frames or across the concrete wall. Prioritize wifi extenders if signals are weak and make sure to update the app.

Is the Sync Module Worth Using?

Yes, the sync module is worth it for subscription fee storage and multi-camera setups for better reliability. It enables on-demand live view in battery-powered devices.