Spektrum SR315 3 Channel Sport Surface Receiver SPMSR315

Enjoy responsive, reliable radio control with the Spektrum SR315 3-Channel Sport Surface Receiver, SPMSR315. Designed for RC cars, trucks, buggies and crawlers, this compact receiver uses frequency-agile 2.4GHz DSMR technology to provide a dependable radio link, even in busy environments with multiple RC vehicles operating nearby.

With three channels for steering, throttle and an additional auxiliary function, the SR315 offers extra flexibility over a standard two-channel receiver. Its 5.5ms-capable DSMR technology provides fast response with compatible radio equipment, while the integrated bind button eliminates the need for a separate bind plug.

SmartSafe and preset Gas Mode failsafe options provide additional control over receiver behaviour if the radio signal is interrupted. Measuring just 32.7 x 21.4 x 13.6mm and weighing approximately 6g, the SR315 is an excellent choice for replacement installations, custom RC builds and compatible surface radio upgrades.

Features

• Genuine Spektrum Receiver: SR315 3-channel sport surface receiver, part number SPMSR315
• Three Control Channels: Supports steering, throttle and one additional auxiliary function
• 2.4GHz DSMR Technology: Frequency-agile operation for dependable radio performance
• DSMR and DSM2 Compatibility: Designed for compatible Spektrum surface transmitters
• SLT FHSS Support: Available on supported receiver firmware versions
• Fast Response: Capable of 5.5ms frame-rate operation with suitable DSMR equipment
• Integrated Bind Button: Simple binding without a separate bind plug
• SmartSafe Failsafe: Moves throttle to its stored failsafe position while other channels hold their last received commands
• Preset Gas Mode Failsafe: Allows preset failsafe positions to be established for all channels during binding
• Compact Hard-Case Design: Suitable for installations with limited receiver space
• Lightweight Construction: Weighs approximately 6g
• Wide Operating Voltage: Accepts 3.5V to 9.6V receiver power
• Full-Range Operation: Designed for compatible full-range surface radio applications
• Integrated Antenna Support: Streamlined case includes an antenna tube slot for tidy installation
• Versatile Surface Application: Suitable for compatible electric and nitro RC vehicles

Specifications

• Brand: Spektrum
• Manufacturer Part Number: SPMSR315
• Model: SR315 Sport Surface Receiver
• Barcode / UPC: 605482209301
• Product Type: 3-Channel RC Surface Receiver
• Channels: 3
• Channel Functions: Steering, Throttle and Auxiliary
• Frequency Band: 2.4GHz
• Radio Modulation: DSMR / DSM2
• Additional Protocol: SLT FHSS on Compatible Firmware Versions
• Frame Rate: 5.5ms Capable with Compatible DSMR Equipment
• Operating Voltage: 3.5–9.6V
• Length: 32.7mm
• Width: 21.4mm
• Height: 13.6mm
• Weight: 6.0g
• Bind Method: Integrated Bind Button
• Failsafe Modes: SmartSafe and Preset Gas Mode
• Receiver Range: Full Range
• Receiver Housing: Compact Hard Case
• Receiver Telemetry: No Dedicated Telemetry
• AVC Stability Control: Not Included
• Water Resistance: Not Rated as Water-Resistant

Compatibility

The Spektrum SR315 is intended for compatible 2.4GHz surface radio systems, including:

• Compatible Spektrum DSMR Surface Transmitters
• Compatible Spektrum DSM2 Surface Transmitters
• Compatible SLT FHSS Surface Transmitters Where Supported by Receiver Firmware
• RC Cars, Trucks, Buggies, Crawlers and Other Surface Vehicles with Suitable Receiver Connections

Important: The SR315 is a surface receiver, not an aircraft receiver. Check the transmitter protocol before ordering. SLT compatibility may depend on the receiver's installed firmware.

Includes

• 1 x Spektrum SR315 3-Channel DSMR Sport Surface Receiver - SPMSR315

Required To Complete

• Compatible 2.4GHz Surface Transmitter
• Compatible RC Vehicle and Steering Servo
• Compatible ESC or Other Appropriate Throttle-Control Equipment
• Receiver Power Supply or ESC BEC Within the 3.5–9.6V Operating Range
• Optional Third-Channel Accessory and Compatible Transmitter Controls, If Required

FAQ

What is the Spektrum SR315 receiver used for? The SR315 receives radio commands from a compatible surface transmitter and provides three channels for steering, throttle and an additional auxiliary function.

How many channels does the SR315 have? It has three channels, compared with the two channels available on the Spektrum SR215.

What is the third channel used for? The auxiliary channel can control a compatible accessory, such as a lighting controller, winch or other suitable device, provided the transmitter has the required channel control.

Which transmitters are compatible with the SR315? The SR315 supports compatible Spektrum DSMR and DSM2 surface transmitters. SLT FHSS compatibility is also available on supported firmware versions.

Will the SR315 work with an SLT transmitter? Spektrum advertises SLT FHSS support, but some standalone SR315 receivers may require a firmware update. Confirm the receiver version and transmitter compatibility before purchasing.

Can I use the SR315 with a Spektrum aircraft transmitter? No. It is intended for compatible surface radio systems rather than Spektrum aircraft radio protocols.

Does the SR315 require a bind plug? No. The receiver has an integrated bind button for entering binding mode.

What is SmartSafe failsafe? SmartSafe moves the throttle channel to its stored failsafe position if the radio signal is lost, while the other channels hold their last received commands.

What is preset Gas Mode failsafe? Preset Gas Mode allows all receiver channels to move to predefined positions if the radio link is interrupted. These positions are configured during binding.

Does the SR315 support a 5.5ms frame rate? Yes. It is 5.5ms capable with compatible DSMR transmitters and appropriate settings.

What voltage does the SR315 require? The receiver operates from 3.5V to 9.6V. Check your ESC's BEC output or dedicated receiver power supply before connecting it.

Does the SR315 include AVC stability control? No. It is a standard surface receiver without integrated AVC stability assistance.

Does the SR315 provide telemetry? Spektrum lists the receiver as having no dedicated telemetry capability. Do not confuse general Spektrum Smart system compatibility with built-in receiver telemetry.

Is the Spektrum SR315 waterproof? No. It is not rated as water-resistant. Protect the receiver from water, mud and excessive moisture.

Can it be used with a brushless ESC? Yes, provided the ESC accepts standard compatible receiver control signals and supplies an appropriate receiver voltage. The SR315 is a receiver, not an ESC.

Can it be used in a nitro RC vehicle? Yes, where the vehicle uses compatible surface radio equipment, servos and receiver power.

Does the SR315 include a transmitter? No. The package contains one Spektrum SR315 receiver only.

Important Notes

• Includes one Spektrum SR315 receiver only
• Requires a compatible surface transmitter, sold separately
• SLT FHSS compatibility may require a receiver firmware update
• Not intended for Spektrum aircraft transmitters
• 5.5ms operation requires compatible DSMR equipment
• Operating voltage must remain within 3.5–9.6V
• Third-channel accessories require suitable transmitter functionality
• No integrated AVC stability control or dedicated receiver telemetry
• Receiver is not rated as water-resistant
• Protect electronics from moisture and vibration
• Configure and test failsafe behaviour before operating the vehicle
• Follow the manufacturer's binding and installation instructions