Senvolon Presence Sensor KL: Room Climate, 6 or 9 m Range, Wi-Fi

Name: Senvolon Presence Sensor KL: Room Climate, 6 or 9 m Range, Wi-Fi
Brand: Senvolon
SKU: SEN185-KL
Price: 67.5 EUR
Availability: InStock

Detects not only motion but also people sitting still, and measures temperature, humidity and air pressure where you actually areSuitable for bedrooms, bathrooms and studies

67,50 € ~~75,00 €~~ -10 % including tax

SKU: SEN185-KL

In stock, delivered within 2-4 business days

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Range: 6 m (KL)

Senvolon Presence Sensor KL: Room Climate, 6 or 9 m Range, Wi-Fi

6 m (KL)

9 m (KL LD)

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One device for presence and room climate, fully local.
The KL uses radar to detect whether someone is in the room, even when they are reading, sitting at a desk or sleeping. In the same housing it measures brightness, temperature, humidity and air pressure and has a built-in siren: no second sensor, no second cable, one device in Home Assistant. The KL covers rooms up to 6 m deep; for large, open rooms it is available as the KL LD with a 9 m range.

Presence, brightness, temperature, humidity, air pressure and siren in one device
Presence and motion: also detects people sitting still, up to 6 m / 120° or 9 m / 150°
No second sensor needed for heating and ventilation
All values via MQTT to smart home systems, Home Assistant discovers the device automatically
No camera and no microphone, data stays at home
Developed and made in Germany, German support, 3-year warranty

Which presence sensor is right for you?

Count several people, draw zones freely: KL MZ presence sensor
Only presence and light, for example in the hallway: Basis presence sensor
All models compared: Presence sensors

Integrated Climate Monitoring

Made in Germany

Flexible smart home integration

up to 3 zones

Optional cloud access

3-year warranty

Free software updates

Built-in siren

Presence and motion detection

Description

Power supply: 5 V DC (USB-C) or from the back via the connection cable

Power consumption: 0.8 W

Dimensions (DxH): 94 x 15 mm

Weight: 59 g

Max. range: KL 6 m, KL LD 9 m

Detection area: KL 120 degrees, KL LD 150 degrees

Zones: KL up to 3, KL LD up to 5, by distance

Sensors and functions: Motion and presence detection, light sensor, climate sensor for humidity, temperature and air pressure, siren

Radar frequency: 24 GHz (FMCW modulation)

Wi-Fi frequency: 2.4 GHz

Mounting: Wall (1.50 to 2.00 m height) or ceiling; KL LD on the wall at the end of the room

Housing: Not protected against water ingress (indoor use only)

Installation and integration

Smart Home Integration

Easy integration into common Smart Home solutions such as Home Assistant, OpenHAB, ioBroker or Node-RED via MQTT. Also supports MQTT Discoveryfor Home Assistant.

Web browser/HTTP API

Direct access and configuration using a web browser. Additionally: Readings can be retrieved in JSON format via HTTP.

Optional Remote Access

Cloud service enables worldwide access to real-time data over the internet. A web app for iOS and Android is available, and push notifications can be activated.

Switching Signal Output

Features a switching signal output for direct control of other devices.

Package contents

Senvolon KL or KL LD presence sensor
USB-C cable (2 m)
Connection cable with JST plug and open ends for power supply from the back
Allen key
Quick start guide

Power adapter not included (USB, 5 V, from 1 A).

Downloads & Support

User manual

Presence Sensor KL v3.1 (PDF) (in German)
Presence Sensor KL LD v1.0 (PDF)

Firmware

Presence Sensor KL v3.1.3 (ZIP)
Presence Sensor KL LD v1.0.2 (ZIP)
Update via the device's web interface. Installation notes are in the README.txt file inside the archive.

Support

English-speaking support (info@senvolon.deand support@senvolon.de).

One device instead of five

The KL is a presence sensor and multisensor in one: it also works as a climate sensor for temperature, humidity and air pressure. This lets you measure the room climate where you actually are, instead of with a separate room sensor on the wall. Presence and motion detector, thermometer and hygrometer, air pressure sensor, brightness sensor and siren: otherwise five devices, each with its own power supply, its own integration and its own spot on the wall. The KL combines everything in one flat housing on the ceiling or wall.

Heating by presence

Presence and room temperature from the same device: the heating is controlled by the temperature where you sit, and only when someone is there.

Ventilation by humidity

If the humidity rises in the bathroom or bedroom, the KL reports it; the fan runs until the value is right again.

Light by brightness

Light only when someone is there and it is dark enough, both from one device.

6 m or 9 m?

What matters is the depth of the room from the wall where the presence sensor will hang. Up to 6 m the KL is enough; for larger, open rooms choose the KL LD. Everything else is the same: room climate sensor, brightness, siren, housing and setup.

KL, 6 m

6 m range, 120°, about 38 m², up to 3 zones by distance. Good for bedrooms, studies, bathrooms and children's rooms. Ceiling or wall.

KL LD, 9 m

9 m range, 150°, about 106 m², up to 5 zones by distance. Good for open living and dining areas, long hallways and workshops. Wall at the end of the room or ceiling.

No app, no hub, no account

Many presence sensors can only be set up with the manufacturer's app or need their own hub. The KL connects directly to your Wi-Fi and you set it up in the browser. Home Assistant discovers the device by itself via MQTT Discovery: presence and motion, the distance of the detected person, plus brightness, temperature, humidity and air pressure. ioBroker, openHAB and Node-RED read the same MQTT values. The cloud for remote access is optional. Step by step: Integrating a presence sensor into Home Assistant.

Which model is right for you?

	Senvolon Presence Sensor KL MZ: Room Climate, 13 Zones, up to 4 People, Wi-Fi	You are on this page Senvolon Presence Sensor KL: Room Climate, 6 or 9 m Range, Wi-Fi	Senvolon Presence Sensor Basis: 6 m Range, Wi-Fi
Show differences only
Measurement technology	60 GHz radar	24 GHz Radar	24 GHz Radar
Installation location	Wall / Ceiling	Wall / Ceiling	Wall / Ceiling
Wi-Fi antenna	integrated	integrated	integrated
Range	6m, 120° detection area	6 m / 120° or 9 m / 150°	6m, 120° detection area
Zones	13: 4 each of detection, stay and interference zones, 1 room boundary	up to 3 (KL) or 5 (KL LD), by distance	up to 3, by distance
Counts multiple people	up to 4	no	no
Light sensor
Climate sensor
Alarm siren
Smart home integration
Remote control via German cloud possible
Power supply	5 V DC (USB-C), 2 to 3 A	5 V DC (USB-C), from 1 A	5 V DC (USB-C), from 1 A
Housing dimensions (mm)	94 x 15 mm	94 x 15 mm	90 x 37 x 17 mm
Best for	Living room with sofa and dining table, several people	Bedroom, bathroom, study, open living area	Hallway, stairwell, storage room
Price	89,10 €	67,50 €	53,10 €

Frequently asked questions

KL or KL LD?

What matters is the depth of the room from the wall where the presence sensor hangs. Up to about 6 m the KL is enough. For larger, open rooms such as a living and dining area or a long hallway, choose the KL LD with 9 m and a wider detection angle of 150°.

Can I use the presence sensor in the bathroom?

Yes, outside the splash zone of the shower and washbasin; the housing is not water-protected. You can use the humidity reading to control the fan as well.

Which power adapter do I need?

A USB power adapter with 5 V and at least 1 A, with a USB-A or USB-C socket. A 2 m USB-C cable is included, the power adapter is not. Alternatively, you can power the presence sensor with 5 V from the back using the included connection cable.

Do I need a hub, an app or an account?

No. The presence sensor connects to your network via Wi-Fi and is set up in the browser. The data goes via MQTT directly to Home Assistant, ioBroker, openHAB or Node-RED. The web app and the cloud are an additional option for remote access.

Does the presence sensor work with 5 GHz Wi-Fi?

It uses the 2.4 GHz band. Most routers transmit on 2.4 and 5 GHz at the same time, in which case it simply connects to the 2.4 GHz network.

Does the presence sensor record images or sound?

No. It has neither a camera nor a microphone. The radar only measures the distance and movement of people.

What is the difference from an infrared motion detector (PIR)?

An infrared motion detector only reacts to movement, for example when someone walks through the room. The radar in the presence sensor also detects people who are sitting still, reading or sleeping, measuring the smallest movements such as breathing. This keeps lights or heating on as long as someone is in the room. More in the guide Presence sensor or motion detector?

How many people are detected?

The KL and KL LD report whether someone is in the room and provide the distance of the last person detected. The KL MZ presence sensor counts several people.

What warranty do you offer?

We grant a three-year warranty on all our products. It covers manufacturing and material defects.