These full sealed switches feature a double shell case for added mechanical strength and high electrical insulation. The switches have a two 'O' ring frontal seals that maintain the seal during operation. The rear of the switch is also fully sealed allowing full protection from flowing water.The contacts are suitable for both low level switching (10mA 50mV - 10μA, 5Vdc minimum) and power applications (3A @ 250Vac).