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SRT323 - ZWave

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SRT323 Secure Z-Wave Room Thermostat

This describes the Z-Wave device SRT323, manufactured by Horstmann Controls Limited with the thing type UID of horstmann_srt323_00_000.

The device is in the category of HVAC, defining Air condition devices, Fans.

SRT323 product image

The SRT323 supports routing. This allows the device to communicate using other routing enabled devices as intermediate routers. This device is unable to participate in the routing of data from other devices.

The SRT323 does not permanently listen for messages sent from the controller - it will periodically wake up automatically to check if the controller has messages to send, but will sleep most of the time to conserve battery life. Refer to the Wakeup Information section below for further information.

Overview

Wakeup Information

The SRT323 does not permanently listen for messages sent from the controller - it will periodically wake up automatically to check if the controller has messages to send, but will sleep most of the time to conserve battery life. The wakeup period can be configured in the user interface - it is advisable not to make this too short as it will impact battery life - a reasonable compromise is 1 hour.

The wakeup period does not impact the devices ability to report events or sensor data. The device can be manually woken with a button press on the device as described below - note that triggering a device to send an event is not the same as a wakeup notification, and this will not allow the controller to communicate with the device.

Channels

The following table summarises the channels available for the SRT323 -:

Channel Channel Id Category Item Type
Sensor (temperature) sensor_temperature Temperature Number:Temperature
Thermostat mode thermostat_mode Temperature Number
Operating State thermostat_state Temperature Number
Setpoint (heating) thermostat_setpoint Temperature Number:Temperature
Battery Level battery-level Battery Number

Sensor (temperature)

Indicates the current temperature.

The sensor_temperature channel supports the Number:Temperature item and is in the Temperature category.

Thermostat mode

Sets the thermostat.

The thermostat_mode channel supports the Number item and is in the Temperature category. The following state translation is provided for this channel to the Number item type -:

Value Label
0 Off
1 Heat
2 Cool
3 Auto
4 Aux Heat
5 Resume
6 Fan Only
7 Furnace
8 Dry Air
9 Moist Air
10 Auto Changeover
11 Heat Economy
12 Cool Economy
13 Away

Operating State

Sets the thermostat operating state.

The thermostat_state channel supports the Number item and is in the Temperature category. The following state translation is provided for this channel to the Number item type -:

Value Label
0 Idle
1 Heating
2 Cooling
3 Fan Only
4 Pending Heat
5 Pending Cool
6 Vent / Economiser

Setpoint (heating)

Sets the thermostat setpoint.

The thermostat_setpoint channel supports the Number:Temperature item and is in the Temperature category.

Battery Level

Represents the battery level as a percentage (0-100%). Bindings for things supporting battery level in a different format (e.g. 4 levels) should convert to a percentage to provide a consistent battery level reading.

The battery-level channel supports the Number item and is in the Battery category.

Device Configuration

The following table provides a summary of the 3 configuration parameters available in the SRT323. Detailed information on each parameter can be found in the sections below.

Param Name Description
1 Temperature Sensor Disable or enable temperature sensor
2 Temperature Scale Temperature Scale
3 Delta T Define the temperature steps
Wakeup Interval Sets the interval at which the device will accept commands from the controller
Wakeup Node Sets the node ID of the device to receive the wakeup notifications

Parameter 1: Temperature Sensor

Disable or enable temperature sensor

The following option values may be configured -:

Value Description
0 Disabled
255 Enabled

The manufacturer defined default value is 255 (Enabled).

This parameter has the configuration ID config_1_1 and is of type INTEGER.

Parameter 2: Temperature Scale

Temperature Scale

The following option values may be configured -:

Value Description
0 Celsius
255 Fahrenheit

The manufacturer defined default value is 0 (Celsius).

This parameter has the configuration ID config_2_1 and is of type INTEGER.

Parameter 3: Delta T

Define the temperature steps Change between temperatures to trigger a temperature report (step 0.1) (Default 10 = 1C) Values in the range 0 to 100 may be set.

The manufacturer defined default value is 10.

This parameter has the configuration ID config_3_1 and is of type INTEGER.

Wakeup Interval

The wakeup interval sets the period at which the device will listen for messages from the controller. This is required for battery devices that sleep most of the time in order to conserve battery life. The device will wake up at this interval and send a message to the controller to tell it that it can accept messages - after a few seconds, it will go back to sleep if there is no further communications.

This setting is defined in seconds. It is advisable not to set this interval too short or it could impact battery life. A period of 1 hour (3600 seconds) is suitable in most instances.

Note that this setting does not affect the devices ability to send sensor data, or notification events.

This parameter has the configuration ID wakeup_interval and is of type INTEGER.

Wakeup Node

When sleeping devices wake up, they send a notification to a listening device. Normally, this device is the network controller, and normally the controller will set this automatically to its own address. In the event that the network contains multiple controllers, it may be necessary to configure this to a node that is not the main controller. This is an advanced setting and should not be changed without a full understanding of the impact.

This parameter has the configuration ID wakeup_node and is of type INTEGER.

Association Groups

Association groups allow the device to send unsolicited reports to the controller, or other devices in the network. Using association groups can allow you to eliminate polling, providing instant feedback of a device state change without unnecessary network traffic.

The SRT323 supports 5 association groups.

Group 1: Lifeline

The Lifeline association group reports device status to a hub and is not designed to control other devices directly. When using the Lineline group with a hub, in most cases, only the lifeline group will need to be configured and normally the hub will perform this automatically during the device initialisation.

Association group 1 supports 1 node.

Group 2: Thermostat Operating State reports

Association group 2 supports 4 nodes.

Group 3: Low Battery Warnings

Association group 3 supports 4 nodes.

Group 4: Thermostat Set Point Reports

Association group 4 supports 4 nodes.

Group 5: Multilevel Sensor Reports

Association group 5 supports 4 nodes.

Technical Information

Endpoints

Endpoint 0

Command Class Comment
COMMAND_CLASS_NO_OPERATION_V1
COMMAND_CLASS_BASIC_V1
COMMAND_CLASS_SENSOR_MULTILEVEL_V1
COMMAND_CLASS_THERMOSTAT_MODE_V1
COMMAND_CLASS_THERMOSTAT_OPERATING_STATE_V1
COMMAND_CLASS_THERMOSTAT_SETPOINT_V1
COMMAND_CLASS_CONFIGURATION_V1
COMMAND_CLASS_MANUFACTURER_SPECIFIC_V1
COMMAND_CLASS_BATTERY_V1
COMMAND_CLASS_WAKE_UP_V2
COMMAND_CLASS_ASSOCIATION_V1
COMMAND_CLASS_VERSION_V1

Documentation Links


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