● Remote controller has 21 buttons numbers
● Transmission Frequency: 38KHz
● Launch Distance: More than 8m (It depends on the surrounding environment， the sensitivity of receiver and other factors)
● Effective Angle: 60 degrees
● Sticking Material: 0.125mmPET
● Valid life: 20000 times
● Static Current: 3~5uA， Dynamic Current: 3 - 5mA

Frequently Asked Questions:
Q1. Why are these called "Arduino Compatible"?
A1. The Arduino group demanded us to remove their logos and rename these products so that they do not lead customers to believe they are the same units sold by Arduino
Q2. Are these 100% compatible with the "normal" Arduino's?
A2. Yes， they really are completely compatible with "normal" Arduino's. Build quality looks the same and everything (studio， library， tools， etc) just works
Q3. Are these actually original Arduino's， then?
A3. We can only officially answer we don't know