Purchase Qty. Reference FOB Price
5-999 Pieces US$1.20
1,000-4,999 Pieces US$1.00
5,000+ Pieces US$0.80
Product Description
Product Description Working principle: The photoelectric liquid level switch has built-in infrared light-emittingdiodes and photosensitive receivers, and the head is a prism structure.When there is no water, the light emitted by thelight-emitting diode willbe refracted by the transparent lens and ...