"The LG01-2000A family of liquid flow switches from Sensirion are able to detect liquid flow by millilitres per minute (ml\/min). It also provides bubble detection. When the flow rate is more than the desired flow switch point, the output signal is 5 V. If the flow rate is lower than this point the output signal is 0 V. This is also the case for when air\/bubbles are sensed within the sensor’s flow channel. This non-invasive liquid flow switch has a straight glass capillary flow path. This also enables chemical resistance and bio-compatibility. An additional Connectivity Kit can be purchased separately for the LG01 liquid flow switches.Features of the LG01 liquid flow switches:. Flow switch & bubble detector. Non-invasive. Fast response time (100 ms). Operating temperature: +10 to +50 °C. LG01-2000A090 switching point: 4.5 ml\/min. LG01-2000A005 switching point: 0.25 ml\/min. Part numbers:. 8986738 - LG01-2000A005 \/ 1-100797-01. 8986731 - LG01-2000A090 \/ 1-100796-01. .Accessory Type = Connectivity KitFor Use With = LG01 Liquid Flow Switches"