This is the Spektrum SR415 4-Channel DSMR Sport Surface Receiver. Bashers, boaters, rock crawlers—the SR415 receiver is ideal for anyone wanting a sport receiver that can handle the worst nature and the RF environment can throw at it. It's built around frequency-agile DSMR technology that delivers superb range and response, especially in places where a lot of 2.4GHz systems are in use at once. This unbeatable signal security is complemented by a fuel-proof case and a waterproof* Reliakote coating that seals internal electronics from the elements and other corrosives like nitro methane and motor spray.

Features:

• 4 Channels (Steering, Throttle, Aux 1, and Aux 2 output)
• Waterproof† Reliakote™ protects the electronic components from water.
• Improved range and reliability with DSMR™
• Brownout Protection prevents the receiver from shutting off in the event the voltage from the receiver drops off due to load.

*For complete details on waterproof standards, please refer to the product instruction manual.