Brand new in box, purchased from Amazon for $25, did not work with the bike. Has 5pin circular arrangement pins in waterproof juliet connector.
Although I can't say for sure what bikes this will work on, I can tell you it will NOT work on a Jasion CB1 even though the plug matches up. Manufacturers all use different firmware that must match the firmware of your bike's motor controller. I took an educated guess but came up wrong. My loss is your gain if you need an S866 display meter, but I can't be responsible if it does not work with your bike.
If your existing display looks like this one, has a 5pin male juliet connector, and says S866 on it, there is a good chance this will work. If you have 6pins in your existing connector, this will not work. I can't make any guarantees but will meet you and test in person on your bike if your in Auburn, or meet you at public location if your not. I repair ebikes and will offer advice or repair services anytime I can.
Can deliver or public meetup anywhere in Auburn.
Please don't message me asking if this will fit your bike - I do not know - please read description carefully, I do not have a chart or listing showing exactly what bikes this works with, I would post that if I had it.
If you need shipping, I list items on these other platforms as well:
https://www.ebay.com/usr/te01_559
https://www.mercari.com/u/user411628492/
https://www.facebook.com/marketplace/profile/100076606443208