The Zeta flame proof siren is an explosion proof siren available in either 24V or 230V versions. An intrinsically safe circuit is housed in the main chamber and it is duly wired up to terminal chamber through sealed bushes. The horn unit is placed on the main chamber cover and the output signals are taken through sealed coils. Neoprene ‘0’ rings are provided for the weather proof protection.
ZIOU-DG – Zeta Addressable Input/Output Unit with Isolator provides two voltage-free, single pole, change-over relay outputs, a single monitored switch input and an unmonitored, non-polarised opto-coupled input.