CTR2-Mini provides the hardware to convert the Seeed Studio Wio Terminal into a complete, easy to use, radio controller system.


CTR2-Mini is available as a PCB kit or as a fully assembled and tested unit. Information on these options can be found on this blog post. The CTR2-Mini Antenna Switch Controller is also available. It comes in two versions, a 1X8 and 2X4 (expandable to 2X8) controller. It is also available as a PCB kit or fully assembled and tested.

Use the order form below to submit an order. If the options on the order form don’t match your needs, or you’re not sure what you need to order, just describe what you’re looking for in the ADDITIONAL INFORMATION field and submit the order form. I’ll get back with you with a quote. You can also contact me directly if you have any questions.

Make sure your email address is correct. You will receive a copy of your order email and I will email you to confirm receipt of your order.

Enter the quantity of each item you want to order in the fields below.

NOTE: If you will only be using CTR2-Mini with a Flex radio the Radio I/O module is optional. There is an option at the end of the order form to delete it. Flex users can set the Mini up to control PTT and KEY over WiFi without a physical connection to their radio.

I will respond to your order email with a quote for the total cost including shipping. Shipping costs vary depending on what you order and your location. Once I receive your order I’ll give you a shipping estimate and place you in the order queue. I will fill orders on a first come, first served basis. Parts availability may cause unexpected delays. I keep a limited number of PCBs in stock so these generally ship immediately.

Complete units are custom built as they are ordered so it may take some time for yours to ship depending on the number of units ahead of yours and parts availability. I will keep you posted on your units progress.

No payment is required until I have your items ready to ship. At that time I’ll email you an invoice for payment. Once payment has been received (and cleared if paying by personal check) I’ll mail your order via USPS and email you the tracking number.

I accept PayPal or personal checks drawn on a US bank. Please specify which your prefer on the order form. PayPal fees will be added to the quote if you specified this payment method. PayPal fees are 3%.

NOTE: To make sure my emails don’t get sent to your spam/junk folder, add my email address to your email white list.

Once you click on Submit the form will clear and a message will appear showing the status of your order submittal.

You may cancel your order at any time prior to the ship date. Just send me an email to cancel.