Features: Thes installing hole is 10 mm. The for protection level of the junction box is above IP-65. PP, plastic material, can be used in strong acid and alkali places. Multi-point control is possible, and the control switch can be customized with the liquid level position. There is no need to provide a separate power supply with the reed switch. A single unit can be used for multi-point control, and the unit price is lower than other level switches. This product can be applied to liquids with different densities, different acids and bases, different pressures and temperatures. Specifications: Material: PP Length: 9.9cm/ 3.9 in Diameter: 2.5cm/ 0.98 in Color :Light blue & yellow Maximum power 10W Maximum switching voltage 110VDC Maximum switching current 0.5A Minimum crash voltage 220VDC Maximum load current 1.0A Maximum contact resistance 100M Temperature range -10 to +85 Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Float Switch