Senvolon Level Sensor RD WLAN – RADAR sensor for millimeter-accurate liquid level monitoring

289,00 € including tax

SKU: SEN180

Highest Precision: Millimeter-accurate, contactless level detection using RADAR technology for large or deep tanks

The Senvolon Level Sensor RD uses high-precision RADAR technology (80 GHz) for millimeter-accurate, contactless monitoring of liquids. It measures tanks up to 40 m deep and provides reliable detection even with fog, dust, or condensation. It features MIN/MAX monitoring and is IP65-certified. Smart Home integration via MQTT (Home Assistant, ioBroker). Data protection friendly: Use without cloud; optional cloud services hosted in Germany available (e.g., for push notifications). Suitable for private households, industry, commerce, or agricultural applications.

Fog, dust and condensation resistant

3-year warranty

Made in Germany

Flexible smart home integration

Optional cloud access

Privacy-friendly

Free software updates

English-speaking support

In stock - delivered within 1-3 business days

Variante: Without external antenna connection

Senvolon Level Sensor RD WLAN – RADAR sensor for millimeter-accurate liquid level monitoring

Without external antenna connection

With external antenna connector

With external antenna connection + antenna

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Description

Measurement method: RADAR-based (80 GHz), non-contact

Safety notice: The Senvolon level sensor is not intended for use in tanks containing flammable liquids (e.g., heating oil, diesel, or gasoline).

Max. measuring distance / tank depth: up to 40 m

Resolution:1 mm

Accuracy:+/- 5 mm

WLAN frequency:2.4 GHz

Optimized for:Liquids

Protection class:IP65

Temperature range:-20 °C to +60 °C

Power supply:230V AC (socket)

Power consumption:0.9 W

Dimensions (WxHxD):55 x 39 x 108 mm

Weight:115 g

Length of connection cable:2 m (replaceable or extendable)

Optional:External RP-SMA female antenna connector and external WLAN antenna

Installation and Integration

Smart Home Integration

Easy integration into common smart home solutions such as Home Assistant, OpenHAB, ioBrokeror Node-REDvia MQTT. Also supports MQTT Discoveryfor Home Assistant.

Web browser/HTTP API

Direct access and configuration via web browser. Additionally: measurement values can be retrieved in JSON format via HTTP.

Optional Remote Access

Cloud service enables worldwide access to real-time data via the Internet. Webapp for iOS and Android is available, push notifications can be activated.

Switching Signal Output

Features an internal switching signal output for automatic control of pumps, alarms, or notifications (controlled by MIN/MAX monitoring).

Flexible Installation

The RD level sensor can be mounted on or in the tank opening; clear view of the surface is required. For commissioning, sufficient WLAN coverage is necessary. By default, the connection is made via the integrated WLAN antenna. Optionally, the RD level sensor is available with an external antenna connector and external WLAN antenna, allowing the antenna to be flexibly positioned – ideal for ensuring stable WLAN connections even in difficult reception conditions.

Scope of delivery

Senvolon Level Sensor RD
Connecting cable (2 m)
Quick guide

Downloads & Support

User Information/Manual:

Bedienungsanleitung.pdf

Firmware

Free firmware updates for new features and improvements. Firmware can be updated via the web interface or here.

Support

support (info@senvolon.deand support@senvolon.de).

Scope of Application Rainwater Cistern

Reliably measure the fill level in the rainwater cistern

The Senvolon level meter monitors the current water level in real time. Among other things, this allows homeowners to precisely know the amount of water available in their rainwater cistern at all times and to plan its use more efficiently.

Learn more

Product Comparison

	Senvolon Level Sensor LD WLAN – Contactless LiDAR Sensor for Monitoring Liquids & Solids	Senvolon Level Meter LD WLAN (RP-SMA) – LiDAR sensor with external antenna connection	Senvolon Level Sensor RD WLAN – RADAR sensor for millimeter-accurate liquid level monitoring	Level Sensor RD WLAN (RP-SMA) – 80 GHz RADAR Sensor with External Antenna Connector

Messtechnologie	LiDAR, non-contact	LiDAR, contactless	Radar, 80 GHz, non-contact	Radar, 80 GHz, non-contact
WLAN Antenne	integrated	ext. Connection for optional external WLAN antenna	integrated	ext. Connector for optional external WLAN antenna
SmartHome Integration
Fernsteuerung über deutsche Cloud möglich
Stromversorgung	230V AC (power outlet)	230V AC (Wall outlet)	230V AC (Wall socket)	230V AC (Wall socket)
Gehäusemaße (mm)	75 x 39 x 108 mm	75 x 39 x 108 mm	55 x 39 x 108 mm	55 x 39 x 108 mm
Geeignet für	Liquids and Solids	Liquids and Solids	optimized for liquids	optimized for liquids
Messgenauigkeit	+/- 5 cm	+/- 2 inches	+/- 5 mm	+/- 5 mm
Messtiefe maximal	12 m	12 m	40 m	40 m
Preis	189,00 €	239,00 €	289,00 €	339,00 €

FAQ

Frequently Asked Questions

Answers to frequently asked questions.

What warranty do you offer on your products?

All our products come with a three-year warranty. This covers manufacturing defects and material faults.

Which level sensor variant (LiDAR or RADAR) is best suited for my application?

We offer level sensors based on two non-contact technologies. The choice depends on the required precision and environmental conditions:

LiDAR (Light)

Accuracy: Centimeter-accurate
Maximum range: 12 meters
Optimized for: Liquids and solids such as pellets
Special features: –

RADAR (Microwave)

Accuracy: Millimeter-accurate
Maximum range: 40 meters
Optimized for: Liquids
Special features: Insensitive to fog, dust, steam, and condensation

Both versions are optionally available with an external antenna connection.

Which tanks, containers and applications is the level sensor suitable for?

The fill level can be measured in any container geometry within the maximum range (12m for LiDAR, 40m for RADAR). Typical application scenarios are:

Water tanks in gardens
Rainwater cisterns
Wells
Silos in agriculture
Pellet storage and salt supplies