China Wireless Rolling Code Garage Door Opener Remote Control with Long Range

1, Q: How many doors can your remotes control?

A: All of our remotes have three controlling buttons (some with one extra
status monitoring button), each one of them has its own signal path,
which theoratically can control multiple doors as long as the openers
can receive the signal, so our remote can control at least 3 different doors
with three different buttons at the same time.
2, Q: Can your remotes fit with other openers from other suppliers?

A: Yes, as long as the opener's frenquency is 433.92Mhz and with open code.
3, Q: What if the battery of your remotes out of power?
A: We use standard CR2032 button cell, which can be easily bought from any
market.
4, Q: Can I get samples from you?
A: Yes, please contact with our sales.