Technical specifications for the ThirdReality Zigbee Contact Sensor indicate the use of the Silicon Labs EFR32MG21 chipset, operating as a Zigbee 3.0 End Device. A primary hardware distinction is the power system, which utilizes 2x AAA batteries. Material analysis suggests this configuration provides a theoretical service life exceeding 2 years and maintains signal stability by avoiding the voltage sag common in coin-cell alternatives.
Performance metrics show a magnetic gap tolerance between 15mm and 20mm. The device is fully compatible with local coordinators such as Home Assistant (ZHA/Z2M) and Hubitat, allowing for cloud-independent operation. Structural dimensions are larger than coin-cell competitors to accommodate the AAA battery housing.
- Modes of operation: State-based entry monitoring.
- Battery Type: 1.5V AAA (x2).
- Protocol: Zigbee 3.0.
Aggregated data indicates that the trace antenna is optimized for the 2.4GHz spectrum. The absence of a tamper switch means the device does not report chassis-cover removal. It is recommended for use in high-traffic entryways where battery maintenance frequency is a primary concern.
The THIRDREALITY Zigbee Door and Window Sensor is an appropriate alternative for those who prefer standard battery replacements over specialized lithium cells.
This unit is archived in the contact sensors division for its specific focus on high-capacity power management.
