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About product and suppliers:
        Alibaba.com offers 111 optical liquid level sensor products. About 100% of these are sensors. 

A wide variety of optical liquid level sensor options are available to you, such as analog sensor, digital sensor, and switching transducer. You can also choose from optical sensor, capacitance sensor, and current sensor. 

There are 111 optical liquid level sensor suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of optical liquid level sensor respectively. 

Optical liquid level sensor products are most popular in North America, Eastern Europe, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 53 with ISO9001, 3 with Other certification.