The SPM4650 DSMX SRXL2 Serial Micro Receiver takes the original SPM4648 receiver and adds more value, functionality and fly-by telemetry while decreasing the size and weight of the already micro-sized Spektrum serial receiver. The SPM4650 uses Spektrum's feature-rich SRXL2 protocol to give pilots a blazing fast serial data connection with up to 20 channels. SRXL2 is a powerful communication protocol that improves bi-directional communication between the radio system and flight controller for added telemetry functionality and flight control configuration right from the pilots Spektrum Transmitter*, all over one signal wire.
| Antenna Length: | 3.9" (100mm) |
| Band: | 2404 - 2476 MHz |
| Bind Method: | Bind Button or SRXL2 Bind Command |
| Channels: | 20 |
| Data Port: | Yes |
| Height: | 0.20" (5mm) |
| Input Voltage: | 3.3 - 8.4V |
| Length: | 0.67" (17mm) |
| Modulation: | DSMX/DSM2 |
| Number of Receivers: | One |
| Range: | Full |
| Telemetry: | Fly By |
| Type: | SRXL2 |
| Water-Resistant: | No |
| Weight: | 0.05oz (1.4g) including antennas |
| Width: |
0.51" (13mm) |
Required cli settings
Note: Betaflight 4.1 and the latest configurator supports SRXL2 so there are no CLI commands needed!
feature -RSSI_ADC
feature RX_SERIAL
feature TELEMETRY
map TAER1234
set rssi_channel = 0
set serialrx_provider = SRXL2
set serialrx_inverted = OFF
set srxl2_unit_id = 1
set srxl2_baud_fast = ON
What's in the Box?
- (1) SPM4650 Receiver
- (2) U.FL Antenna
- (1) 6” Receiver Extension Cable
- (1) 4-Pin Connector
- (1) Product Manual
- Clear Heat Shrink Wrap