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🔒 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.








| ASIN | B0BXP613WN |
| ASIN | B0BXP613WN |
| Audible Noise | 75 Decibels |
| Batteries | 1 CR2 batteries required. (included) |
| Battery Description | Alkaline |
| Best Sellers Rank | #10,878 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #13 in Home Security Door & Window Sensors |
| Brand | Onvis |
| Built-In Media | 2*Onvis Smart Door & Window Sensor1* adhesive backing 1*user manual 1*Reset pin |
| Color | white |
| Compatible Devices | HomeKit-enabled Apple devices |
| Control Method | App |
| Country of Origin | China |
| Country of origin | China |
| Customer Reviews | 4.0 4.0 out of 5 stars (59) |
| Customer reviews | 4.0 4.0 out of 5 stars (59) |
| Date First Available | 14 May 2024 |
| Item model number | CT3-N |
| Manufacturer | Onvis |
| Manufacturer | Onvis |
| Manufacturer Warranty Description | 1Year |
| Mfr Part Number | CT3--2 |
| Model Number | CT3-N |
| Mounting Type | Door Mount, Window Mount |
| Number of Batteries | 1 CR2 batteries required. (included) |
| Power Source | Battery Powered |
| Product Dimensions | 3 x 4.6 x 1.5 cm; 68 g |
| Sensor Technology | Contact Sensor |
| Size | 2 |
| Voltage | 3 Volts |
E**A
I’ve had multiple sets of sensors from Onvis and they work perfectly. Installation is easy and connectivity is smooth. The one and only time I had a connection issue with one of them, I contacted customer service and they were very helpful and even offered to replace for a new one. 100% recommend.
T**M
Super responsive and work great, just deducted a star as it's weird that they don't have the ability to show as tiles in homekit. Either way they're perfect for what I needed.
D**.
Homekit solution to the mailbox on the curb, "You've Got Mail" automation. This one has the range to make it easy. Attached to the door of the mailbox (even inside my metal mailbox) it has enough range to reach my house. Two thumbs WAY up.
D**D
Have tried multiple Onvis products for the Matter/Thread support with Apple HomeKit and I'm pulling it all out of my smart home setup and going to Zigbee devices with Home Assistant. The Onvis stuff has been very unreliable. Clear line of sight with the hub about 20 feet away. Replaced with Zigbee devices and it's been rock solid ever since. These contact sensors I was able to return unused. To add insult to injury they deducted a "fee" from my refund. So much for Prime "free" refunds. No more Onvis for me.
B**D
These sensors respond quickly and have a long battery life. They’re easy to add to HomeKit and stick in a variety of applications. When I had an issue, Onvis support was quick to help me resolve it.
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