The Context UL-Plus multisensor detector contains an optical smoke sensor and a thermistor temperature sensor whose outputs are combined to give the final analogue value.
The signals from the optical smoke sensing element and the temperature sensor are independent, and represent the smoke level and the air temperature respectively in the vicinity of the detector. The detector will not respond to a slow temperature increase – even if the temperature reaches a high level. A large sudden change in temperature can, however, cause an alarm without the presence of smoke, if sustained for 20 seconds.
|Supply Voltage||17-28V DC|
|Quiescent Current||500µA average, 750µA peak|
|Operating Temperature||0°C to +60°C; min -20°C|
|Humidity (no condensation)||0–95% RH|
|Dimensions||100 (D) x 50 (H) mm|
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