Mobile airfield light designed to quickly illuminate temporary airfield in accordance with ICAO:
S4GA portable runway threshold identification light (RTIL) or runway end identifier light (REIL) is an elevated airfield light, white, flashing, battery-powered, and remotely controlled.
SP-401 Runway end identifier light (REIL, also RTIL – runway threshold identification light) is a white flashing unidirectional light that is used to indicate the approach end of a particular runway. S4GA portable REIL lights are applicable for all types of runways as temporary or backup runway lights.