# LT-33222-L LoRa I/O Controller - Payload decoder and downlink config **URL:** \ **Category:** Dragino\ **Created:** [October 27, 2018, 3:02pm UTC](https://www.thethingsnetwork.org/forum/t/lt-33222-l-lora-i-o-controller-payload-decoder-and-downlink-config/19177 "2018-10-27T15:02:33Z")\ **Posts on this page:** 1\ **Showing post:** 8
**Author:** ![BoRRoZ](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/borroz/32/44234_2.png) [@BoRRoZ](https://www.thethingsnetwork.org/forum/u/BoRRoZ)\ **Post date:** [January 8, 2019, 7:28pm UTC](https://www.thethingsnetwork.org/forum/t/lt-33222-l-lora-i-o-controller-payload-decoder-and-downlink-config/19177/8 "2019-01-08T19:28:02Z")
see > [@Fair Use Policy explained](https://www.thethingsnetwork.org/forum/t/limitations-data-rate-packet-size-30-seconds-uplink-and-10-messages-downlink-per-day-fair-access-policy/1300): > > For The Things Network’s public community network the [Fair Access Policy](https://www.thethingsnetwork.org/docs/lorawan/duty-cycle.html#maximum-duty-cycle) limits the data each end-device can send, by allowing: An average of 30 seconds uplink time on air, per 24 hours, per device. At most 10 downlink messages per 24 hours, including the ACKs for confirmed uplinks. A good goal is to keep the application payload under 12 bytes, and the interval between messages at least several minutes. An [online airtime calculator can give you some insight](https://avbentem.github.io/airtime-calculator). The following regulations apply a… --- _[View the full topic](https://www.thethingsnetwork.org/forum/t/lt-33222-l-lora-i-o-controller-payload-decoder-and-downlink-config/19177)._