Ring Glass Break Sensor Teardown

ID: 149082

Description: A look inside the Ring Glass Break Sensor.

Steps:

1. Features:
2. Glass Break Detector
3. Real-Time Notifications
4. Simple Setup and Simple App Connection
5. Uses three replaceable AA Batteries

6. In the Box
7. Glass Detect Unit, User and informational Manuals

8. Close up look at the Glass Break Sensor
9. Glass Break Sensor Microphone
10. Setup Button
11. Twist off bottom for access to the AA batteries
12. Pull Tab to enable the batteries to power the sensor

13. Backside view of the ring Glass Break Sensor Enclosure
14. Double sided tape used for installation of the sensor
15. Mounting Holes are also available for on the backside/bottom of the sensor

16. Twisting off the bottom of the unit shows the removeable batteries.
17. It is nice to see a security product with easily accessible and replaceable batteries

18. Next, separate the top with a iFixit Opening Tool to get access to the electronics inside.
19. There are number of catches around the outside of the device. These catches popped loose fairly easily with the iFixit Opening Tool.
20. Once the top is removed, we get our first look at the internal PCB

21. There is a single Philips #0 screw holding the PCB to the enclosure.
22. Remove the single screw allows the Internal PCB to be pried out with a Spudger tool
23. Internal PCB removed from the enclosure

24. Close up view of the back side of the battery compartment that also supports the internal PCB
25. Power from the batteries is passed to the PCB via metal tabs
26. Tab on the enclosure interfaces to the slide switch on the PCB to cut power when the bottom of the enclosure is rotated to access the batteries
27. Battery Mating Connectors for the battery compartment metal tabs . The non-forced connectors allow for easy removal of the PCB from the enclosure

28. With the internal PCB removed, we get our first look at the backside and front sides of the PCB.

29. Close up view of the backside of the PCB
30. MEMS Microphone, Vesper VM3011 - World's First Adaptive ZEROPOWER Listening™ Digital Piezoelectric MEMS Microphone
31. Close up view of the MEMS Microphone
32. Switch/button operation is not documented
33. Power Shutoff Switch. When the bottom is rotated to access the batteries - this switch slides as the enclosure bottom is rotated to shutoff battery power to the PCB

34. Close up view of the front side of the PCB
35. Setup button and environment protection gasket
36. Dust filter and protection cover for microphone port

37. Close up view of some of the electrical components on the top side of the PCB. Other than the two large ICs on the topside of the PCB, the other components look to be related to power management and control
38. Syntiant, NDR101BQQF. Always-on Neural Processor. Used for detecting the breaking glass
39. Silicon Labs, RZ13M1442. Z-Wave Long Range Radio with ARM MCU

40. Close up view of the Glass Break Sensor Antenna and Antenna matching network
41. Based on the Antenna Design, the radio is probably sub-GHz
42. Antenna Matching Network
43. Bandpass SAW Filter

44. Close up view of the MEMS Microphone Port
45. Acoustic Foam surrounds the Microphone port, and the acoustic foam is capped off with a dust cover

46. Teardown Exploded Views of the ring Glass Break Sensor