Liquid Level sensors
Reliable, accurate

Optical liquid level switches

Miniature optical liquid level switches; 
TTL compatible or transistor output;
100 mA or 1 A output current;
polysulphone plastic housings;
M10 or M12 threaded connection  more
Miniature optical liquid level switches;
TTL compatible or transistor output;
100 mA or 1 A output current;
TROGAMID® plastic housings;
M10 or M12 threaded connection  more
High performance optical liquid level switches; 
TTL compatible or transistor output;
10 mA or 800 mA output current;
polysulphone measuring tip and stainless steel housing;
G 1/2 or 1/2 NPT threaded connection  more
Company
First Sensor is one of the world's leading suppliers in the field of sensor systems. In the growth market of sensor systems, First Sensor develops and produces customer-specific solutions for the ever-increasing number of applications in the industrial, medical, and mobility target markets. Our goal here is to identify, meet and solve the challenges of the future with our innovative sensor solutions early on.
Investor Relations
Our investor relations activities aim at raising the international publicity of First Sensor AG and at consolidating and extending the perception of our share as an attractive growth stock. This means we keep our online communication transparent, comprehensive and continuous in order to enhance your trust in our share.
Applications
In many market-specific applications, sensors are components that are critical to your success. First Sensor is the partner you need on projects that call for careful selection, customized adaptation and the highest standards of excellence. Our Business Units Industrial, Medical and Mobility are clearly aligned to the core markets of industrial applications, medical technology as well as automotive and transport.
Tailored Solutions
In the growth market of sensor systems, First Sensor develops and produces customer-specific sensors, electronics, modules and complex systems for the ever-increasing number of applications in the industrial, medical, and mobility target markets. As a solution provider the company offers complete development services from a first draft and proof of concept up to the development of prototypes and finally serial production. First Sensor offers comprehensive development expertise, state-of-the-art packaging technologies and production capacities in clean rooms from ISO class 8 to 5.
Tailored Solutions
In the growth market of sensor systems, First Sensor develops and produces customer-specific sensors, electronics, modules and complex systems for the ever-increasing number of applications in the industrial, medical, and mobility target markets. As a solution provider the company offers complete development services from a first draft and proof of concept up to the development of prototypes and finally serial production. First Sensor offers comprehensive development expertise, state-of-the-art packaging technologies and production capacities in clean rooms from ISO class 8 to 5.

Tailored Solutions
Career
Innovation, excellence, proximity – these are our values, our ambition, our drive. Anything less is not an option. Our sensor solutions stand for technical innovation and economic growth. As such, they form the basis for the development and application of new technologies in almost all areas of life. We aim to shape this future together with you.