So as not to overload the free ISM band, each object must adhere to a maximum emitting time. This is the Duty Cycle, which must not exceed 1% of the time in uplink (UL), so 36 s/h. On the gateway side, the Duty Cycle is 10% of time in DL, so 6 mn/h. In the operational context, Orange recommends a message transmission time not exceeding one second. Even under these constraints, an object can emit several hundred messages a day. ⚑ Some operators limit the number of messages to 140 a day.