You will receive a State message to your request when you send a Get message or if your Set message has the res_required flag set to 1. Though typically you would only require acknowledgement from Set messages.

Core

Acknowledgement - Packet 45

This packet is returned when you specify ack_required=1.

Discovery

StateService - Packet 3

This packet is used to tell you what services are available and the port each service is on.

This packet is the reply to the GetService (2) message

Device

StateHostFirmware - Packet 15

This packet will tell you what version of firmware is on the device.

Typically you would use this information along with StateVersion (33) to determine the capabilities of your device as specified in our Product Registry.

The version_major and version_minor should be thought of as a pair of (major, minor). So say major is 3 and minor is 60, then the version is (3, 60). This means that (2, 80) is considered less than (3, 60) and (3, 70) is considered greater.

LIFX products will specify a different major for each generation of our devices.

This packet is the reply to the GetHostFirmware (14) message

StateWifiInfo - Packet 17

This packet will give you information about the signal strength of the device.

The units of this field varies between different products, You can use the following pseudo code to determine the signal strength of your device.

rssi = int(floor(10 * Log10(signal) + 0.5))

if rssi < 0 or rssi == 200:
    if rssi == 200:
        status = "No signal"
    else if rssi <= -80:
        status = "Very bad signal"
    else if rssi <= -70:
        status = "Somewhat bad signal"
    else if rssi <= -60:
        status = "Alright signal"
    else:
        status = "Good signal"

if rssi == 4 or rssi == 5 or rssi == 6:
    status = "Very bad signal"

elif rssi >= 7 and rssi <= 11:
    status = "Somewhat bad signal"

elif rssi >= 12 and rssi <= 16:
    status = "Alright signal";

elif rssi > 16:
    status = "Good signal"

else:
    status = "No signal"

This packet is the reply to the GetWifiInfo (16) message

StateWifiFirmware - Packet 19

This packet is the reply to the GetWifiFirmware (18) message

StatePower - Packet 22

This packet tells us the current power level of the device. 0 means off and any other value means on. Note that 65535 is full power and during a power transition (i.e. via SetLightPower (117)) the value may be any value between 0 and 65535.

This packet is the reply to the GetPower (20) and SetPower (21) messages

StateLabel - Packet 25

This packet tells us the label of the device.

This packet is the reply to the GetLabel (23) and SetLabel (24) messages

StateVersion - Packet 33

This packet tell us the version of the firmware on the device. This information can be used with our Product Registry to determine what capabilities are supported by the device.

This packet is the reply to the GetVersion (32) message

StateInfo - Packet 35

This packet provides information about the device.

This packet is the reply to the GetInfo (34) message

StateLocation - Packet 50

This packet provides the details of the location set on the device.

To determine the label of a location you need to send a GetLocation (48) to all the devices you can find and for each location uuid determine which label is accompanied by the latest updated_at value.

This packet is the reply to the GetLocation (48) and SetLocation (49) messages

StateGroup - Packet 53

This packet provides the details of the group set on the device.

To determine the label of a group you need to send a GetGroup (51) to all the devices you can find and for each group uuid determine which label is accompanied by the latest updated_at value.

This packet is the reply to the GetGroup (51) and SetGroup (52) messages

EchoResponse - Packet 59

This tells you the same value you specified when you sent an EchoRequest (58) to the device.

StateUnhandled - Packet 223

For some firmware, this packet is returned when the device receives a packet it does not know how to handle. For now, only the LIFX Switch has this behaviour.

It will return the type of packet it couldn't handle. For example, if you send a GetColor (101) to a LIFX switch, then you would receive one of these with a unhandled_type of 101.

Light

LightState - Packet 107

The current visual state of the device and it's label

This packet is the reply to GetColor (101), SetColor (102), SetWaveform (103) and SetWaveformOptional (119) messages

StateLightPower - Packet 118

This says the current power level of the device.

This packet is the reply to the GetLightPower (116) and SetLightPower (117) messages

StateInfrared - Packet 121

This says the current brightness of the infrared output from the device

This packet requires the device has the infrared capability. You may use GetVersion (32), GetHostFirmware (14) and the Product Registry to determine whether your device has this capability

This packet is the reply to the GetInfrared (120) and SetInfrared (122) messages

StateHevCycle - Packet 144

This says whether a HEV cycle is running on the device.

This packet requires the device has the hev capability. You may use GetVersion (32), GetHostFirmware (14) and the Product Registry to determine whether your device has this capability

This packet is the reply to the GetHevCycle (142) and SetHevCycle (143) messages

StateHevCycleConfiguration - Packet 147

This packet lets you set default values for a HEV cycle on the device

This packet requires the device has the hev capability. You may use GetVersion (32), GetHostFirmware (14) and the Product Registry to determine whether your device has this capability

This packet is the reply to the GetHevCycleConfiguration (145) and SetHevCycleConfiguration (146) messages

StateLastHevCycleResult - Packet 149

This packet tells you the result of the last HEV cycle that was run

This packet requires the device has the hev capability. You may use GetVersion (32), GetHostFirmware (14) and the Product Registry to determine whether your device has this capability

This packet is the reply to the GetLastHevCycleResult (148) message

MultiZone

StateZone - Packet 503

This represents the HSBK value of a single zone on your strip.

This packet requires the device has the Linear Zones capability. You may use GetVersion (32), GetHostFirmware (14) and the Product Registry to determine whether your device has this capability

This packet is the reply to the GetColorZones (502) and SetColorZones (501) messages

StateMultiZone - Packet 506

This represents a segment of 8 HSBK values on your strip.

This packet requires the device has the Linear Zones capability. You may use GetVersion (32), GetHostFirmware (14) and the Product Registry to determine whether your device has this capability

This packet is the reply to the GetColorZones (502) and SetColorZones (501) messages

StateMultiZoneEffect - Packet 509

This packet tells us what Firmware Effect is current running on the device.

This packet requires the device has the Linear Zones capability. You may use GetVersion (32), GetHostFirmware (14) and the Product Registry to determine whether your device has this capability

This packet is the reply to the GetMultiZoneEffect (507) and SetMultiZoneEffect (508) messages

StateExtendedColorZones - Packet 512

The HSBK values of the zones specified in the request

This packet requires the device has the Extended Linear Zones capability. You may use GetVersion (32), GetHostFirmware (14) and the Product Registry to determine whether your device has this capability

This packet is the reply to the GetExtendedColorZones (511) and SetExtendedColorZones (510) messages

Relay

StateRPower - Packet 818

Current models of the LIFX switch do not have dimming capability, so the two valid values are 0 for off and 65535 for on.

This packet requires the device has the Relays capability. You may use GetVersion (32), GetHostFirmware (14) and the Product Registry to determine whether your device has this capability

This packet is the reply to the GetRPower (816) and SetRPower (817) messages

Tile

StateDeviceChain - Packet 702

Information about each device in the chain.

This packet requires the device has the Matrix Zones capability. You may use GetVersion (32), GetHostFirmware (14) and the Product Registry to determine whether your device has this capability

This packet is the reply to the GetDeviceChain (701) message

State64 - Packet 711

The current HSBK values of the zones in a single device.

This packet requires the device has the Matrix Zones capability. You may use GetVersion (32), GetHostFirmware (14) and the Product Registry to determine whether your device has this capability

This packet is the reply to the Get64 (707) and Set64 (715) messages

StateTileEffect - Packet 720

The current Firmware Effect running on the device

This packet requires the device has the Matrix Zones capability. You may use GetVersion (32), GetHostFirmware (14) and the Product Registry to determine whether your device has this capability

This packet is the reply to the GetTileEffect (718) and SetTileEffect (719) messages

SensorStateAmbientLight - Packet 402

Note: This feature is experimental and potentially subject to change.
This feature is only supported by a limited number of devices.
This packet shows the current levels of ambient light as detected by the target device, and is emitted by a device in response to a [SensorGetAmbientLight (401)](https://lan.developer.lifx.com/docs/querying-the-device-for-data#sensorgetambientlight---packet-401) message.