








🔒 Stay connected, secure, and ahead with Onvis Thread-enabled sensors!
The Onvis Thread-Enabled HomeKit Door Window Contact Sensor is a compact, wireless security device designed for seamless integration with Apple HomeKit. Featuring Thread technology for instant alerts without a hub, it offers a year-long battery life powered by a CR2450 cell, and prioritizes user privacy with no cloud storage or tracking. Ideal for smart home automation, it enables real-time notifications and control of other HomeKit accessories, all managed via the Onvis app or Apple devices.








| Number of batteries | 1 CR2 batteries required. (included) |
| Voltage | 3 Volts |
| Control method | App |
| Noise level | 75 Decibels |
| Mounting type | Door Mount, Window Mount |
| Sensor technology | Contact Sensor |
| Size | 2 |
| Manufacturer | Onvis |
| Part number | CT3--2 |
| Item Weight | 68 g |
| Product Dimensions | 3 x 4.6 x 1.5 cm; 68 g |
| Batteries | 1 CR2 batteries required. (included) |
| Item model number | CT3-N |
| Color | white |
| Included components | 2*Onvis Smart Door & Window Sensor1* adhesive backing 1*user manual 1*Reset pin |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium |
| tech_spec_battery_description_toys | Alkaline |
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