Smoke Alarm - SMSZB-120 – Technical manual
Develco Products A/S
Olof Palmes Allé 40
http://develcoproducts.com
DK-8200 Aarhus N
12
4.2.4
IAS WD – Cluster id 0x0502
The IAS WD cluster is described in ZigBee Cluster Library Specification.
Using this cluster, a ZigBee device can access a ZigBee enabled IAS WD device and issue alarm warning
indications (Smoke siren) when a system alarm condition is detected.
4.2.4.1
Attribute
Id#
Name
Type
Range
Man/Opt
Relevance and ref.
0x0000
MaxDuration
Uint16
Type range
M
Default is 240 sec
The
MaxDuration
attribute specifies the maximum time in seconds that the siren will sound continuously,
regardless of start/stop commands.
4.2.4.2
Commands
The IAS WD cluster has 1 command as server.
Id#
Name
Man/Opt
Relevance and ref.
0x00
Start warning
M
4.2.4.2.1
Command - Start warning
This command starts the WD operation. The WD alerts the surrounding area by
audible (siren).
The
Start Warning
command payload shall be formatted as illustrated
Command Data
Size
Description
Warning
1 byte
0 = Siren off
1 = Siren On
Warning duration
2 byte
Warning duration is sec
Note: The start warning command doesn’t set the alarm bit in the IAS Zone status.
The alarm is only triggered if the devices detect smoke or fire.
4.2.5
OTA Upgrade - Cluster id 0x0019
The cluster provides a ZigBee standard way to upgrade devices in the network via OTA messages. The devices
support the client side of the cluster.
