Spektrum AR400, DSM2/X 4CH Receiver


This Spektrum™ AR400 DSM2/X Receiver is ideal for park flyers and larger sport models that require full-range performance – Features a hard shell case with vertical servo connection points.

Item Number: SPMAR400
Channels: 4 | Modulation: DSM2/X | Weight .2 oz

Out of stock

Join the waitlist to be emailed when this product becomes available

SKU: SPMAR400 Category: Tag:


Additional Details


  • Full-range DSMX® receiver
  • Antenna is amplified for greater signal clarity
  • 4-channel—throttle, elevator, aileron and rudder channels for park flyers, trainers and most sport planes
  • Flight log and telemetry compatible
  • 2048 resolution
  • 1-Year Limited Warranty


The full-range Spektrum™ AR400 receiver is easily one of the best receiver values in RC. It combines the speed and precision of DSMX® control with the signal security of an active amplified antenna. This antenna enables the AR400 receiver to “see around” reflective materials on a model and avoid antenna polarization blind spots. It also allows the AR400 receiver to pick out its transmitter’s signal with remarkable clarity in the noisiest 2.4GHz environments. All of this is complemented by SmartSafe™ failsafe protection and the security of Spektrum QuickConnect™ technology that provides lightning-fast reconnection in the event of a low-voltage brownout.

NOTE: The AR400 receiver is not compatible with the original DX6 DSM park flyer radios, not to be confused with the newer DX6 DSMX full range radios.

Always purchase products from a Horizon Hobby, Inc. authorized dealer to ensure authentic high-quality Spektrum product. Horizon Hobby, Inc. disclaims all support and warranty with regards, but not limited to, compatibility and performance of counterfeit products or products claiming compatibility with DSM2®, DSMX or Spektrum products.

This product is not intended for use by children under 14 years of age without direct adult supervision.


Type | Full-range DSMX® aircraft receiver
# of Channels | 4
Modulation | DSM2®/DSMX
Band | 2.4GHz
Length | 1.2 in (31mm)
Width | 0.7 in (17mm)
Height | 0.4 in (11mm)
Weight | 0.2 oz (5.6 g)
Voltage Range | 3.5–9.6V
Antenna Length | 190mm