Square D (Schneider Electric) XB7EV04BP Harmony Pilot Light. Schneider Electric Harmony™ Square D™ Pilot Light, Monolithic, Series: XB7, 24 VAC/VDC, 20 to 27 mA, Integral Style, Red Lens, LED Lamp, 22 mm Size, Round Shape, 70000 hr Average Life, Screw Clamp Terminal, NEMA 4/12/IP65/IP20 Enclosure, Panel Mounting, Environmental Conditions: -13 to 158 deg F Operating Temperature, -40 to 158 deg F Storage Temperature. Additional Description: SQD -XB7EV04BP PL LED 24V RED. Catalog Description: Harmony XB7, Monolithic pilot light, plastic, red, Ø22, integral LED, 24 V AC/DC.