Features:
1. Powered by dual Semtech LR1121 RF chips, supports Gemini & Xrossband dual-band mode, receives 2.4GHz and 900MHz signals simultaneously for strong anti-interference performance
2. 4 discrete antenna ports, quad antenna design optimizes signal arrangement, effectively reduces packet loss for long range FPV flight
3. Max 100mW telemetry RF power, up to 500Hz refresh rate, pre-flashed ExpressLRS V3.3.2 firmware, adopts CRSF bus protocol, MAVLINK ready
4. 20×20mm mounting hole layout, compact size 27.2×27.2mm, lightweight at 2.7g (without antennas), easy to install on drone stack
5. Wide input voltage DC 4.5-8.4V, compatible with 2-3S battery, complete accessories included for quick setup
Description:
RadioMaster DBR4 is a Gemini Xrossband ExpressLRS receiver with dual LR1121 chips, supporting simultaneous 2.4GHz and 900MHz reception, four?antenna diversity, MAVLink support for long-range FPV, fixed-wing ,drones.
Specifications:
Model: RadioMaster DBR4
RF Chip: Semtech LR1121 ×2
MCU: ESP32
Frequency: 2.404-2.479GHz / 903.5-926.9MHz
Max Telemetry RF Power: 100mW
Refresh Rate: 50~500Hz
Firmware: ExpressLRS V3.3.2 pre-installed
Protocol: CRSF, MAVLINK Ready
Mounting Hole: 20×20mm
Dimension: 27.2×27.2mm
Weight: 2.7g (without antennas)
Input Voltage: DC 4.5-8.4V (2~3S)
Package contents:
1 × DBR4 ExpressLRS Receiver
2 × 2.4GHz Antennas
2 × 915MHz Antennas
1 × CRSF Connecting Cable
4 × Rubber Vibration Dampers
Note:
Only the above package content, other products are not included.
1.Due to the difference between different monitors,the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.
2.Due to the manual measurement and different measurement methods, please allow 1-3mm deviation.Thanks!
Before purchase:
1.All the goods are ready stock, we will arrange the shipment at once if we receive the order.
2.Please read the item description, if you have any question, do not hesitate to contact us.
3.No warranty,if you receive a defect item,please contact us at once with item picture.
4.Use the vouchers for more saving.
After purchase:
1.If you are satisfied,please express your use feeling.
2.Please contact us before you are going to give us bad review. We are helpful and will solve the problems. If you receive a defect item,please contact us at once with item picture or video.
