Please be informed that our company will be closed from September 29 to October 4 for the National day, the shipping cut-off date is 28. Any orders placed during the holiday will be shipped by 5 (GMT+8) when normal business will resume.
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.