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Door Contact Sensor with SuperLink Wireless Communication
Ubiquiti USL-Entry-R is a door contact sensor designed to monitor the open/closed status of doors. It accurately detects door opening and closing events with high precision. The device supports SuperLink wireless communication and is designed for use with the UniFi Protect system.


Flush-Mount Door Enclosure
The sensor features a housing designed for flush installation inside a door, keeping it concealed and unobtrusive. It is an ideal solution for office environments and other locations where maintaining a clean, uncluttered interior appearance is important.
CR2 Battery
The device is powered by a CR2 battery. A fully charged battery can provide up to 3 years of operation under normal conditions. The battery is user-replaceable and can be easily replaced when needed.

Specifications
| Ubiquiti USL-Entry-R | |
| Overview | |
|---|---|
| Dimensions |
Device: 44 x 22 x 74.5 mm (1.7 x 0.9 x 2.9") Magnet: ⌀22 x 12.1 mm (⌀0.9 x 0.5") |
| Mounting | Screw mount |
| UniFi Application Suite | UniFi Protect |
| Performance | |
| Connectivity | SuperLink |
| Operating Frequency | 865.1 – 869.5 MHz |
| Max. TX Power | 14 dBm |
| Max. Range | 2 km (Line of Sight) |
| Reed Switch | Yes |
| Hardware | |
| Max. Power Consumption | 15 mW |
| Supported Voltage Range | 3 V |
| Power Method | Lithium battery CR2 |
| Battery Life | Up to 3 years |
| Weight |
Device: 24 g (0.8 oz) With battery: 34 g (1.2 oz) |
| Enclosure Material | Polycarbonate |
| Mount Material | Polycarbonate |
| Buttons |
(1) Factory-reset (1) Function button (1) Tamper switch |
| Ambient Operating Temperature | 0 to 40° C (32 to 104° F) |
| Ambient Operating Humidity | 10 to 90% noncondensing |
| NDAA Compliant | Yes |





