TechInsights Teardown: Securam Wi-Fi smart lock

The smart home market really took off when Amazon launched its Alexa-line of devices. This set off numerous smart speakers to compete with the e-commerce giant and later more devices debuted to offer similar home automation and convenience.

This included anything from smart thermostats and blinds to smart doorbells and connected lights. Smart locks were also a part of this explosion in home automation that features anything from automatic locking capabilities and remote unlocking via a proprietary app. Additional features came online as well such as cameras built in, connectivity to the latest Wi-Fi standards and even fingerprint sensors so homeowners didn’t need any keys at all.

The Securam Wi-Fi smart lock is a smart home device that includes a fingerprint sensor inside but also, as the name suggests, connection to the home internet. The device includes flash memory and 16- and 32-bit microcontroller from Renesas as part of the overall electronic components inside.

The following is a partial deep dive into the smart lock conducted by TechInsights.

Summary

• No camera
• Fingerprint sensors
• No display

Released: January 2021

Target market: Consumer/smart home

Availability: Worldwide

Price: $169.00

The main board of the Securam smart lock uses flash memory and microcontrollers to control the main functions of the smart home device. Source: TechInsights

Main board

The main board of the Securam Wi-Fi smart lock includes a 32-bit MCU from Renesas as well as serial flash memory from Winbond. Other electronic components include:

• A voice player from Waytronic Technology
• I2C real-time clock by Seiko Epson
• LDO regulator from Microne
• 250 mA/5V LDO regulator from Holtek

The Wi-Fi board is an important aspect to the function of the smart lock as it operates via home connection. Source: TechInsights

Wi-Fi board

The Wi-Fi subsystem is an important part of the smart lock due to its operation inside the app to unlock and lock remotely. The board includes 4 MB of serial flash memory from Winbond and a low-power Wi-Fi4 system-on-chip from Renesas.

The assembly board is the secondary control board of the smart lock. It features another MCU from Renesas and more flash memory. Source: TechInsights

Assembly board

The assembly board is a controller board for the smart lock from Securam, it includes the following electronic components:

• 16-bit MCU from Renesas
• H-bridge motor driver from Texas Instruments
• LDO regulator from Microne

The main components found inside the Securam smart lock. Source: TechInsights

Major components

• $4.46 — Fingerprint sensor — Betterlife (Qty: 1)
• $4.15 — Main frame (Qty: 1)
• $4.02 — Main frame (Qty: 1)
• $3.35 — Cylinder lock (Qty: 1)
• $2.75 — Wi-Fi subsystem — Renesas (Qty: 1)
• $1.51 — Gear motor (Qty: 1)
• $1.25 — Thumb turn (Qty: 1)
• $0.98 — 32-bit MCU — Renesas
• $0.87 — Speaker with wires (Qty: 1)