Ubiquiti UniFi Recessed Entry Sensor – Flush-mount door sensor, SuperLink, CR2 battery

Ubiquiti UniFi Recessed Entry Sensor — A Discreet Door Sensor

In environments where discretion and reliability are paramount, the recessed door sensor from Ubiquiti is the ideal solution. Designed for both residential and commercial properties, this sensor allows for a discreet installation that enhances aesthetics without compromising functionality. Utilizing SuperLink wireless technology—which offers a range of up to 2 km within the 865.1-869.5 MHz band—the sensors can be positioned flexibly, free from the constraints of cabling. An integrated reed switch reliably detects when a door is opened or closed, while built-in tamper detection protects the device against unauthorized interference. With a battery life of up to 3 years, maintenance requirements are minimized, making it perfect for long-term deployment.

Discreet Installation and Robust Design

The sensor’s recessed design allows it to be installed directly into a door frame or door leaf, keeping the device hidden from view so it does not disrupt the interior aesthetic. The sensor body—measuring 74.5 × 44 × 22 mm —and the magnet—measuring ⌀22 × 12.1 mm —are constructed from durable polycarbonate, ensuring a long service life. The unit is mounted using screws and features both a factory reset button and a function button for easy operation. ### Wireless Technology and Management Communication takes place via the proprietary SuperLink protocol, which operates within the 865.1-869.5 MHz frequency band (certified for the EU). With a maximum transmit power of 14 dBm and an antenna gain of -4 dBi, the sensor achieves a signal range of up to 2 km. Device management is handled through the UniFi Protect application, enabling easy integration and centralized control of multiple sensors.

Energy-Efficient Operation

The device is powered by a CR2 (3 V) lithium battery with a lifespan of up to 3 years, significantly reducing maintenance requirements. Its energy-efficient design, with a maximum power consumption of 15 mW, ensures long-term operation without the need for frequent battery replacements. Furthermore, the sensor features tamper detection, which alerts users to unauthorized interference—such as the opening of the cover or the device being detached from its mounting surface. ### Technical Details

• Operating temperature: +0 to +40 °C
• Relative humidity: 10 to 90% (non-condensing)
• Weight: 24 g (without battery), 34 g (with battery)
• Enclosure material: Polycarbonate
• Operating frequency: 865.1-869.5 MHz (EU)
• Maximum power consumption: 15 mW
• Maximum transmit power: 14 dBm
• Antenna gain: -4 dBi
• Sensor: Reed switch
• Certifications: CE, FCC, IC, NDAA

This sensor is an ideal choice for anyone seeking a discreet and reliable solution for door monitoring, with the ability to integrate into an existing UniFi Protect system.