The Banner Engineering S18DLHRQ (87903) is an 18 mm daylight-visible, high-intensity indicator light from the S18L barrel-mount family, designed for panel or machine-status indication in rugged industrial environments. It operates on 9–30 V DC with PNP input, uses a four-pin M12 integral quick-disconnect, and features a red LED at 625 nm delivering about 12.5 lumens while drawing up to 60 mA. The unit uses a polycarbonate housing with a flat-window barrel-mount design (M18 x 1.0) and has IP67 and IP69K ratings for washdown and harsh conditions. Physical footprint is 23.5 × 35.7 mm with an 18 mm indicator body, and it is rated for operation from -40 °C to 100 °C.
