Stainless Steel Liquid Level Sensor

1) Solid state technology.
2) Small size.
3) Digital output.
4) Pre-wired
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Product Details


The FS-IR1903 Industrial Series stainless steel liquid level sensor provides a single point detection. Sensor range was designed to directly switcht indicators, sounders or relays. An infra-red LED and phototransistor accurately positioned at the base of the cone ensure good optical coupling between the two when the sensor is in air. When the sensor’s cone is immersed in liquid, the infra-red light escapes from the cone causing a change in the amount of light at the phototransistor which makes the output change state. Various electrical outputs are available to suit different applications.


Model: FS-IR1903

Name: Stainless steel liquid level sensor

Material: Stainless steel housing, PSU prism, PTFE waterproof wire, PH 2.5 connector.

Output Signal: Analog or digital signal can be choose.

Output type: High in Air or Low in Air.

Operating voltage: 5 V~28 V.

Operating temperature: -20~100 degree.

Supply current: 15 mA normal.


1) Solid state technology.

2) Small size.

3) Digital output.

4) Pre-wired.

home appliances, spa baths, vending machines, food and beverage, medical compressors, machine tools, automotive.

Our advantages





Q 1: How About The Quality Of The Managements?
A: We have a complete quality control system, all of our products will be fully pre-inspection by QC departments before shipping to you. We have the certification of ISO, CE, we could send the certification test of our company to you.
Q 2: Can You Offer OEM Or Design Services?
A: Yes, we have our own design department and production tools. We can make OEM products according to your requirements.
Q 3: What Are Your Terms Of Payment And Delivery Time?
A: We could accept T/T, Paypal, Western Union, Credit Assurance. Generally, we will arrange the shipment within 7 days after received payment.
Q 4: How About Warranty?
A: 12 months warranty.

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