AQ&Q Company Ltd., introduces its new line of full tank shut off switches. The three models, which either include 1/4-inch compression nut, 1/4-inch quick fit or 1/8-inch NPT female connections, measure pressure in pure water storage tanks and automatically shut off the pump when the pressure reaches 40 psi. They can also be calibrated to turn the pump back on at 25 psi with a maximum working pressure of 100 psi. Website: http://www.aqq.com.twEmail: knoxon@ms64.hinet.net