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The MKII-AHR Rate of Rise heat detector uses a thermistor arrangement to sense a quick rise in temperature and also a final threshold temperature of 57°C.

Features
- Designed to meet EN54 requirement
- Lockable to base to stop unauthorised removal
- Remote LED output
- 8 LEDs for improved, 360° visibility
- Compatible with all Fyreye MkII bases
- Addressed with dip switches or hand-held programmer

Specifications
- Detector Class: Rate of Rise & Fixed Heat Detector A2R
- Design Standard: EN54 part 5
- Approval: DIFT
- Operating Voltage: 10.50 to 33VDC
- Quiescent Current: 500uA
- Alarm Current: @ 24V DC 5mA
- Operating Temperature: -10°C to +50°C
- Minimum Continuous: Temperature 0°C
- Maximum Humidity: 95% RH non-condensing
- Alarm Condition: Rate of rise or fixed heat trigger @ 57°C
- Coverage: 50m²
- IP Rating: IP43
- Start-up Time: 10 Seconds
- Size: (with Base): 100 x 48 mm
- Weight (with Base) 75g (133g)
- Remote Output : 20mA at 24VDC