Quantity| : one piece Installation method: vertical installation Hole size: 10MM Product material: stainless steel Application scenario: suitable for automatic water level control or alarm in water towers, reservoirs water, swimming pools, etc. Durable material: The mini vertical indicator is made of 304 stainless steel, which is very durable, not easy to corrode and reliable. Running operation high temperature : The float level sensor can operate at temperatures up to 120C. Float switches are very heat resistant. Generally used outdoors, not easy to damage and cost effective. Don\u0026 39;t worry if it gets too hot and doesn\u0026 39;t work. Easy to install: The liquid level sensor has a simple structure, and it is easy to install the liquid level controller. Use in any environment: Water level sensor has no complicated circuitry and won\u0026 39;t be messed with, just choose material, liquid, pressure or temperature use. any environment. The float switch can work in AC 0-220V and DC 0-200V and is suitable for most power sources.