Collection: MHz is sensor and gateway linking frequency

If your products is different frequency, they can't be linked each other.

Subject to wireless usage rules in different regions, please you confirm that the frequency is legal before you pay. 
If you need to change the frequency after the order is shipped, which you need afford the extra cost. 
For details, please checking the recommended frequency from list, or sending your problem to our Email.

Recommended Frequency list.PDF