CTRS4 Control Box for Obstruction Lights

Short Description

  • With four light outputs
  • With a photocell, bypass switch to adjust auto/manual
  • LED indicators for light, power and photocell
  • Steady/flashing adjustable
  • NO & NC alarm relay for failures of lights, power and photocell
  • Operation Voltage & rated power rate: 85-265VAC/48VDC/24VDC/12VDC, 4W
  • Indoor type is intuitive; outdoor type is watertight IP65



The CTRS4 control box is used for controlling and monitoring RedDot LED low intensity and medium intensity aviation obstruction lights. The user-friendly interface is intuitive for users to monitor obstruction lighting operation status and easily configure functions.

There are four light outputs (max. 1A load/output). Practically, for example, under 48VDC, each output connects one OM2K or F864 medium intensity light, or up to eight OL32/OL100 low intensity lights.

With a Form C dry alarm relay (NO&NC), the control box is capable of transmitting obstruction lighting system’s failure to users’ alarm devices, when light failure, power-off or photocell failure.

A PHC01 photocell is used for automatically switching on and off the obstruction lighting system from dusk to dawn. Bypass switch on interface panel allows users to bypass the photocell for permanently lightening or testing.

CTRS4 indoor control box has a plastic enclosure on which indicators and switches are directly accessible. CTRS4 outdoor controller covered by an aluminum enclosure and assembled with cable glands, is a perfect IP65 model for harsh environment use.