FDM-1 is a standard-sized dual monitor module used to monitor and supervise two independent two-wire Style B (Class B) dry-contact initiating device circuits (IDCs) at two separate, consecutive addresses in intelligent, two-wire systems.
Robust aluminium housing, IP66-compliance and fire-resistant cable - everything you need for a loudspeaker in harsh applications! Adjust the angle with the included universal swivel bracket and enjoy
HN-A500I is a high efficient 500W Power/Booster amplifier provides audio signal amplification for public address and voice alarm system, It is reliable, efficient and light in weight.