AutomationDirect announces APS series inductive proximity sensors that are IP67-rated rectangular compact DC sensors available in top or front sensing models with 2.5mm and 4mm sensing ranges. Available in two-wire or three-wire configurations, the 10-30 VDC high-frequency oscillation type sensors are fitted with polycarbonate unshielded housings and LED status indicators. The APS series is available with normally-open or normally-closed NPN, normally-open PNP or normally-open NPN/PNP outputs. These sensors have an embedded two-meter connection cable. APS series proximity sensors, priced at $17.50, are backed by a lifetime warranty and are cULus, CE and RoHS approved.
Source : http://www.automation.com/