The TT 26 point addressable heat detector is designed to detect rises in heat in premises as an early warning of developing fires. The TT 26 heat detector is fixed-temperature type, it responds when external temperature reaches a fixed value and transmits an alarm signal to the FACP.
Versions:
| Supply voltage | 17… 28 V DC |
| Quiescent current (non-isolated detector) | ≤ 280 μA |
| Quiescent current (isolated detector) | ≤ 330 μA |
| Alarm current | 1,8 … 2,3 mA |
| Alarm current, remote LED illuminated | 3,8 … 4,8 mA |
| Max.series impedance, switch closed | ≤ 0,2 Ω |
| Temperature class according to EN 54-5 (can be changed by means of device programmer) | A2S, BS |
| Temperature Response Range: | |
| – for class A2S | 54 – 70 ºС |
| – for class BS | 69 – 85 ºС |
| Dimensions (diameter x height), mm | 96,5 x 51,7 |
| Weight (with a standard base) | ≤ 125 g |
| IP Rating | IP20 |
| Operating temperature | -10 ºС to +55 ºС |
| Humidity | 0% to 95% RH (no condensation or icing) |
| Mean time to failure | ≥60000 hours |
| Average service life | 10 years |
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