Product details:

Compact flame detector for use with flame safeguard controls with ultraviolet amplifiers. Features: Use with Honeywell Flame Safeguard primary safety controls and burners requiring ultraviolet flame detection. Mounts on a 1 in. sighting pipe by using an integral collar. Protects the sensing tube with a shield. Meets outdoor rain tight requirements of Underwriters Laboratories Inc., NEMA 4 and NEMA 4X. Wires in parallel for difficult sighting applications. Seals against pressures as high as 5 psi (34.5 kPa) when correctly installed. Field-replaceable ultraviolet sensing tube.