Dwyer&reg; Line Powered Water Leak Detector, WD3-LP-D2-A, DPDT, w/ Audible Alarm Switch Type: DPDT relay Temperature Limits: 32 to 122F (0 to 50C) Visual Alarm: Red LED for water level; Green LED for power condition Enclosure Material: ABS polycarbonate with flammability classification UL 94 V-0 Enclosure Rating: Water-tight up to 3/4 of the body height; Agency Approvals: CE, RoHS