This page describes the Frequency setting and how to change it.

There are six frequencies supported by our devices:

Frequency Number Frequency
1 433 MHZ
2 915 MHZ (US & Canada)
3 868.3 MHZ (Europe)
4 868 MHZ
5 903 MHZ
6 315 MHZ

For two devices to communicate they must have the same Frequency and channel (ATCN) and PanID.

Frequency Default Settings

Default is 915 MHZ, but should be changed to the open frequency in your region.

How to change the Frequency

The Frequency can be changed using the ATCH command.

Command: ATCH[p1]
Response: ATCH[p1]

Where: p1 = A number between 1 and 6 per the Frequency Number in the above table

The below example changes the Frequency to 433 MHZ:

python 03 ATCH1
SENT     : 03ATCH1

The device requires a restart in order to effect the new frequency.