Brand New Liquid Level Sensor Plastic (Polypropylene) Construction 240V/0.5A/10Watts Maximum Capacity (Note) (A relay is needed to control a heavier load, such as a motor. Please view my other listings for recommended relay.) Vertical Mount Longer sensor body sticks deeper into the tank NO (Normally Open) or NC (Normally Closed) Convertible by Simply Inverting the Float. Combination (see illustrations below): Top mount, switch open when tank is full Top mount, switch closed when tank is full Bottom mount, switch open when tank is empty Bottom mount, switch closed when tank is empty Operation Voltage Range 0 to 240 V (AC or DC) Max Current 0.5 A Max Power 10 W Max Temperautre 180 ºF Max Pressure 150 PSI Min Specific Gravity 0.90 Your satisfaction is guaranteed or your money back! (Item may be returned within 30 days upon delivery for a full refund of the closing bid. Shipping and handling is not refundable.) Note: A small mechanical switch (aka. reed switch) sealed in the stationary part of the sensor is activated by a small magnet in the moving part (the float). Therefore this sensor works with any voltage/current (AC or DC) within the maximum limits specified above. All voltage/current/power ratings are for resistive loads. However, one should always try to reduce the voltage and current applied on the sensor to a level as low as possible in order to extend the life of the sensor. (For example, the Electrical Life is 5,000,000 cycles when the load is 5V, 10mA; 100,000 cycles when the load is 24V, 250mA)