The CGL125-3S4 with Sensor is a fluid level controller manufactured by Omron. It is a miniature floating-type sensor that uses Hall-Effect elements in an stainless steel probe. The sensor can be used in various types of liquid level controller applications, such as in tanks, pools, vessels, wells, etc. It can detect the presence or absence of a fluid, and can also measure the liquid level. The CGL125-3S4 also features a digital output compatible with NPN and PNP transistors. The sensor is designed with a waterproof construction, and is also resistant to high temperatures, with an operating range of -25°C to 125°C. The sensor is CE certified and RoHS compliant.