Series 8491 signal horns serve as audible alarms for EEx i circuits.
Features- 49 different signal sequences adjustable with internal DIP switches
- Three different signal sequences can be selected through an external switch with a given DIP switch setting
- Three PFEER signals: "General alarm", "Toxic gas alarm", "Prepare to abandon platform"
- Volume adjustable
- Robust plastic enclosure (ABS)
- Synchronized tone sequence of parallel operated devices by quartz-controlled oscillator
- Option: speaker module, programmable