# Ubiquiti Entry Sensor

*Ubiquiti / USL-Entry, USL-Entry-US, USL-Entry-3-US*

> The Entry Sensor mounts on a door or window and reports whether it is open or closed. It uses SuperLink, and its battery lasts up to six years. It suits Home Assistant users through an integration (the maker's hub).

- Canonical page: https://smarthomecanon.com/devices/unifi-entry-sensor
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [Ubiquiti](https://smarthomecanon.com/brands/ubiquiti) |
| Category | Contact sensor |
| Model numbers | USL-Entry, USL-Entry-US, USL-Entry-3-US |
| Status | Current[^1] |
| Type | Sensor[^2] |
| Connection | SuperLink[^2] |
| Power | CR123A battery, up to 6 years[^2] |
| Range | 2 km[^2] |
| What it does | Door and window open/closed[^2] |
| US availability | Available[^1] |

## Integration paths

**How the Ubiquiti Entry Sensor connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Proprietary + hub](https://smarthomecanon.com/protocols/proprietary-gateway) | A SuperLink Gateway, A UniFi console running UniFi Protect[^3][^2] | unknown | unknown |

**Platform support for the Ubiquiti Entry Sensor**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Proprietary + hub | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld | UniFi Protect |
| Proprietary + hub | [Homey](https://smarthomecanon.com/platforms/homey) | withheld | com.ubnt.unifiprotect |

## Related pages

- [UniFi Protect sensors, alarms and chimes](https://smarthomecanon.com/lines/unifi-protect-sensors-and-alarms) (line)
- [Ubiquiti](https://smarthomecanon.com/brands/ubiquiti) (brand)
- [Proprietary radio with a hub](https://smarthomecanon.com/protocols/proprietary-gateway) (protocol)
- [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) (platform)
- [Homey](https://smarthomecanon.com/platforms/homey) (platform)

## Sources

[^1]: UniFi US store: Entry Sensor. https://store.ui.com/us/en/products/usl-entry (manufacturer, checked 2026-10-10)
[^2]: UniFi Tech Specs: Entry Sensor (USL-Entry). https://techspecs.ui.com/unifi/physical-security/usl-entry (manufacturer, checked 2026-10-10)
[^3]: UniFi SuperLink Gateway Setup and FAQs (help.ui.com). https://help.ui.com/hc/en-us/articles/29711478053911-UniFi-SuperLink-Gateway-Setup-and-FAQs (manufacturer, checked 2026-10-10)