Here are some key Features and Information about the FlySky FS-GR3E Receiver:

Channels: The FS-GR3E is a 3-channel receiver, allowing it to receive signals for up to three different functions or movements on your RC model.

Compatibility: The receiver is designed to work with FlySky's 2.4GHz AFHDS (Automatic Frequency Hopping Digital System) protocol, which is commonly used in FlySky RC systems.

Waterproof Design: The "waterproof" designation indicates that the FS-GR3E receiver has some level of protection against water. This can be particularly useful for RC vehicles that might be used in environments where exposure to moisture or water is possible. However, it's important to note that "waterproof" doesn't mean the receiver can be fully submerged or exposed to water for extended periods.

Bind Process: As with other FlySky receivers, you need to bind the FS-GR3E with a compatible FlySky transmitter. The binding process establishes a secure communication link between the transmitter and receiver.

Compact Size: The receiver is typically designed to be compact, making it suitable for use in various RC vehicles where space is limited.

Range: The receiver provides a reasonable operational range, allowing you to control your RC model within a specified distance from the transmitter.