Product description
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Model name: Sentek HD912-2 (2-wire)
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Operating voltage: DC 10-33 V; mostly used in 24 V systems
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Reaction level: fixed 57 °C or rapid temperature rise >8 °C/min (Rate-of-Rise compliant with UL 521 Class 2 and EN 54-5).
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Application: suitable for classic fire alarm systems
| Parameter | Value |
|---|---|
| Standby current (standby) | ~45 µA |
| Alert current | up to 50 mA (for 24 V) |
| Maximum power consumption | 100 µA |
| Response temperature | +57 °C |
| Power demand in case of disturbance | up to 80 mA |
| Temperature operating range | -10 … +50 °C |
| Moisture | up to 95 % RH |
| Dimensions with base | Ø 100 mm × height 46 mm |
| Weight | 120 g |
| LED indicator | steady red light in case of alarm |
✅ Functions & features
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2-wire connection: easy integration directly into ATS centres
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Automatic temperature monitoring: fixed + Rate-of-Rise combination ensures fast response in case of fire risk.
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Robust ABS housing: low profile, widely suitable for ceiling installation
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Optional LED output: for information (HD912-2L model only).

