You may have noticed on some GoPet photos that there are 2 keys shown. These are 2 speed units with an extra lockout key which controls changing from low speed to high speed. In some situations such as rental, industrial, and trade show use the GoPet owner may not want riders to go over 6 mph. The lockout key keeps the GoPet at low speed.
Here’s how it works: Insert both the ignition/speed key and the lockout key. Then turn the lockout key to the right. Set the speed key at low speed. Turn the lockout key back to the left and remove it. Now the GoPet is locked in low speed which tops out at 6 mph.