Limitations

This page primarily outlines the usage limitations of certain resources within the platform.

Product Management

Item	Description	Limit
Product	Maximum number of products that can be created under a single account	Individual account: 10 Enterprise account: 300
TSL Model	Maximum number of TSL models that can be added under a product	300
	Maximum number of enumeration members for ENUM type properties	100
	Maximum number of parameters for STRUCT type properties	50
	Maximum length of TEXT type properties	10240 characters
	Maximum number of elements for ARRAY type properties	100
	Maximum number of input parameters in a single service	100
	Maximum number of output parameters in a single service	100
	Maximum number of output parameters in a single event	100
	Maximum total number of input and output parameters across all services and events	300

Connectivity & Communication

Item	Description	Limit
Device Access	Using the same device information (same ProductKey and DeviceKey), only one connection to the IoT platform server is allowed at a time
	Maximum number of connection requests per minute for a single device	7
	Maximum message length for MQTT publication. Requests exceeding this size will be rejected	64 KB
	Maximum message length for CoAP publication. Requests exceeding this size will be rejected	64 KB
	MQTT connection heartbeat interval between the device and the platform	(1~600)*1.5 seconds
	Sending frequency of MQTT heartbeat packet	Heartbeat packets are included in 30 messages/second/device upload limit
	A device can only publish and subscribe to its own topics

App Development

Item	Description	Limit
SMS	Frequency of sending SMS to the same phone number using the same signature	1 message/minute 5 messages/hour 10 messages/day
	Frequency of calling SMS sending interface	More than 5 calls by the same IP in 10 minutes: IP blacklisted for 1 hour More than 10 calls by the same IP in 1 hour: IP blacklisted for 10 hours More than 40 calls by the same IP in 1 day: IP blacklisted for 24 hours
	SMS verification code validity	5 minutes
	Verification code expires after use
Email	Frequency of calling email sending interface	More than 50 calls by the same IP in 10 minutes: IP blacklisted for 1 hour More than 100 calls by the same IP in 1 hour: IP blacklisted for 10 hours More than 400 calls by the same IP in 1 day: IP blacklisted for 24 hours
	Email verification code validity	5 minutes
	Verification code expires after use
End User	Frequency of calling user registration, login, and password reset interfaces	More than 50 calls by the same IP in 10 minutes: IP blacklisted for 1 hour More than 100 calls by the same IP in 1 hour: IP blacklisted for 10 hours More than 400 calls by the same IP in 1 day: IP blacklisted for 24 hours
	Account locked for 20 minutes after 5 incorrect login attempts; login disabled during the lock period
End User Message	Earliest message time that can be queried	90 days
Device Binding	Maximum number of devices that can be bound per end user	10,000
Device Sharing	Maximum number of end users a bound device can be shared with	250
Home	Maximum number of homes/rooms an end user can create	500
Group	Maximum number of groups a device can join	5
	Maximum number of devices in a group	50
	Maximum number of groups an end user can create	500
Scene	Scene names cannot be duplicated in the same home
	Maximum number of scenes an end user can create	500
	Maximum number of actions in a scene	50
	Earliest scene log time that can be queried	6 months
Automation	Automation names cannot be duplicated in the same home
	Maximum number of trigger conditions in an automation	10
	Maximum number of actions in an automation	50
	Maximum number of automations an end user can create	500
	Automation trigger method	Edge-triggered
	Automation trigger limit	First occurrence per day: If 10 executions happen within 1 minute, no further commands will be issued until 1 minute later. Second occurrence per day: If 10 executions happen within 1 minute, no further commands will be issued until 5 minutes later. Third occurrence per day: If 10 executions happen within 1 minute, no further commands will be issued until 10 minutes later (For subsequent occurrences, the wait time remains 10 minutes). The limit will be cleared when the automation rule is edited or re-enabled.
	Earliest automation log time that can be queried	6 months
App	Maximum number of apps an enterprise user can create	500

SaaS Development

Item	Description	Limit
Client Subscription	After establishing the connection, the client must immediately send an authentication request. If authentication is not successful within 15 seconds, the AMQP server will actively close the connection	15 seconds
	After the client establishes a connection with the IoT platform, if no frame communication occurs after the heartbeat cycle, the AMQP server will actively close the connection	Heartbeat cycle: 30 seconds~300 seconds
	If the AMQP server forwards a message to the client and does not receive an acknowledgment message from the client within 300 seconds, it is considered an ACK timeout	300 seconds
Connection Frequency	A consumer group can request connections no more than 100 times per minute	Limit the number of connection requests per Access Key to 100 per minute
Push Rate	A single connection is rate-limited to 1000 TPS. You can expand capacity by adding more connections, with a maximum of 128 connections	Maximum number of connections per queue: 128 Rate limit per connection: 1000 TPS
Push Failure Caching Strategy	If a message cannot be consumed in real time due to offline clients or slow message consumption, it enters the backlog queue
	Maximum message size that can accumulate in a consumption queue	500 MB
	Message retention time	6 hours
	Maximum number of queues and subscriptions a single account can create	Queues: 50, automatically disabled if unused for over 30 days Subscriptions: 100