5424 Dust Detector
5520 Water Alarm

Fine dust detector
Flood sensor

5424 Overview
This device is designed to detect fine dust produced by combustion.

Operational and Installation features
This signals various types of very early signs of combustion. Lack of limitations due to wiring is useful to appropriately position the device which is of paramount importance for it to properly operate. It is installed on the highest point of the ceiling, at a maximum height of 3 m, in 6x6 m rooms or similar.

5520 Overview
This device is designed to detect the presence of water or liquids in general.

Operational and Installation features
 It detects flooding and/or water or liquid levels. The device works when connected to Sensor HT part no. 5515.

5424 Dust Detector 5520 Water Alarm

5424
Size (h×Ø)
65×110 mm

Weight
0.10 Kg

Environmental class
2

Housing
ABS


5520
Size (h×l×d)
80×35×16 mm

Weight (5520)
0.03 Kg

Environmental class
2

Housing
ABS

5424 Power Supply
9V GP1604A alkaline battery or equivalent battery. Battery life: approximately two years with standard use. (battery life decreases considerably when repeated alarm events take place).

Radio transmission
EU compliant Dual Band frequency operations. Range is suitable for device’s intended use.

Monitoring and Testing
An alarm sounds, which lasts as long as there is smoke inside the closed room (various minutes). Blow sufficient clean air in the detector to end an alarm triggered for these reasons.

5424 Features
This device features an infrared photo-optical detector housed in a dark casing: smoke reduces the infrared signal until it causes an alarm.
Warning: kitchen smoke, high concentrations of water steam and other similar dust can cause untimely alarms. Dust Detector reports its operating conditions (supervision) and battery levels every 40 minutes. The control panel reports these signals following any arming and/or disarming operations.

5520 Features
This device contains two plates in anti-oxidant material, connected to two clamps. Install the wall device with the sensitive plates downwards, at the desired height to signal the level of liquids. Connect it to Sensor HT, obviously positioned higher up, using the appropriate clamps.