This automatic DIN rail mounting emergency lighting test switch is permanently wired to the emergency fitting supply.
The automatic control is used to interrupt the supply for a pre-programmed period. At the end of the time period, the supply to the luminaires is automatically reinstated. The result is that there is no risk of depleting the batteries in the emergency fitting by leaving them connected for prolonged periods.
This single DIN rail module device can be conveniently located at the distribution board or in a control panel.
Please note: A single ELTD1 is suitable for switching one circuit. For multiple circuit applications use ELT-REL.