This is Liquid Water Level Sensor Horizontal Float Switch. It is made of high quality and durable material for long time use. Good choice for you.<!--Features --><p>FEATURES</p><UL class=p_f><LI>Use them with hydroponics, saltwater tank, freshwater tank, gardening, aquariums for power head control, pet bowls, fish tanks, filtration, heating, or what ever your project may be</LI><LI>Up float switch</LI><LI>Contains no mercury</LI></UL><!--Specifications --><p>Specifications</p><TABLE border=0 cellSpacing=0 cellPadding=0 width="100%"><TBODY><TR><TD width=131>Cable Length</TD><TD width=365>12"</TD></TR><TR><TD>Maximum Load</TD><TD>50 W</TD></TR><TR><TD>Max Switching Voltage</TD><TD>250V DC</TD></TR><TR><TD>Minimum Voltage</TD><TD>100V DC</TD></TR><TR><TD>Maximum Switching Current</TD><TD>0.5A</TD></TR><TR><TD>Max Load Current</TD><TD>1.0A</TD></TR><TR><TD>Max Contact Resistance</TD><TD>0.4┯</TD></TR><TR><TD>Temp Rating</TD><TD>-20 ~ +80→ </TD><TR><TD>Net Weight</TD><TD>10g</TD></TR><TR><TD>Product Number</TD><TD>FS-1B-31</TD></TR></TBODY></TABLE><!--Package Includes --><p>Package Includes</p><UL><LI>2&nbsp;x Liquid Water Level Sensor Horizontal Float Switch</LI></UL><!--Extra Info --><!--produts_compatibility -->