Blink SyncModule 2

What is it?

Home appliance to control other Amazon Blink devices.

According to the manufacturer: "The Sync Module is a hub that plugs into an electrical outlet to relay commands and network details to devices in the system it manages. The Sync Module 2 requires a power outlet and is connected to your always-on Wi-Fi network to handle activity for up to ten Blink devices. This extends camera battery life, saves clips without a subscription, improves convenience for scheduling, and arms a group of devices at once."^[1]

What can it do?

Control Blink devices (cameras, doorbells, etc) from the Blink mobile app
Connect up to 10 of any Blink Outdoor 4, Wired Floodlight, Outdoor and Indoor (all models), XT2, XT, Video Doorbell*, and Mini* cameras.
Support local video storage for up to 10 Blink cameras.
Record and store motion clips when you insert a USB flash drive (up to 256 GB).

Main components

Microcontroller

NXP MCIMX6Z0DVM09AB^[2]

ARM Cortex-A7 running Linux
900MHz
SRAM: 128kB
SPI/UART/I2C
96KB bootrom, 128KB internal RAM
Has Arm TrustZone

Wifi/Bluetooth Module

NXP 88W8987-NYE2^[3]

2.4/5Ghz Wifi
Bluetooth 5.2 (BLE also)

Serial flash

Winbond 25Q256JVEQ^[4]

256M-bit
Dual/Quad SPI XIP (133MHz SPI)

RAM

ISSI IS43TR16640BL^[5]

1GB SDRAM
16bit DDR3

Sub-GHz "EZRadio" Transceiver

Markings: 455A CQRX 220

Silicon Labs Si4455^[6]

Frequency of 283–960 MHz
–116 dBm Sensitivity
Modulation:
- (G)FSK
- OOK
+13 dBm Max output power
50 nA Standby Current
500 kbps Max Data Rate
1.8 to 3.6 VDC

Teardown pictures

Front face of the BSM2
Back face of the BSM2
Top view
To take off the top part just use a spudger, guitar pic, etc. No glue or screws to take the top cover off.
PCB view (top)
PCB view (top) closeup
PCB view (bottom)
Serial Flash closeup
MCU closeup
SRAM closeup
Si4455
Wifi/BT module closeup