The Fyreye Rate of Rise heat detectors (MKIIAHR) use a thermistor arrangement to sense a quick rise in temperature and also a final threshold temperature of 57°C. The Fyreye fixed heat detector (MKII-AHF) has a single thermistor arrangement that gives an alarm at a temperature of 90°C.
The Fyreye Rate of Rise heat detectors (MKIIAHR) use a thermistor arrangement to sense a quick rise in temperature and also a final threshold temperature of 57°C. The Fyreye fixed heat detector (MKII-AHF) has a single thermistor arrangement that gives an alarm at a temperature of 90°C. The detectors will work with most modern fire alarm control panels and comes supplied with a locking grub screw to prevent unauthorised head removal. The Fyreye Extra range of detectors has an extra LED to improve detector identification in an alarm condition.
| Model | MKII AHF | MKII AHF /B | MKII AHF /CS90 | MKII AHF/CS90/B | MKII AHR | MKII HR/B |
| Part no | 80-214 | 80-214/B | 80-218 | 80-218/B | 80-212 | 80-212/B |
| Detector class | Fixed heat only A2S | Fixed heat only CS | Rate of rise and fixed heat detector A1R | |||
| Design standard | EN54 Part 5 | EN54 Part 5 | EN54 Part 5 | |||
| Approval | LPCB | |||||
| Operating Voltage | 17 to 28 VDC | |||||
| Quiescent current | 500µA | |||||
| Alarm current@24vdc | 5mA | |||||
| Operating Temp(°C) |
-10 to +50°C | -10 to +80°C | -10 to +50°C | |||
| Min continous Temp | 0°C | |||||
| Max Humidity | 95% RH Condensing | |||||
| Alarm Condition | Fixed Heat Trigger@57°C | Fixed Heat Trigger@90°C | Rate of Rise or Fixed Heat Trigger@57°C | |||
| Coverage | 50m² | 50m² | 50m² | |||
| IP Rating | IP43 | |||||
| Start up time | 10 Seconds | |||||
| Size(with base) | 100*49mm | 100*49 mm | 100*49mm | |||
| Weight(with base) | 75g | |||||
| Remote Output | 5mA at 24VDC |
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