⚠️ This product is no longer in production
Please visit the B3 RDT TX product page instead.
📡 About B2 Transmitter
The high-powered B2 transmitter works with all 434 MHz BMK Remote DT receivers. It offers 9× more power than the B1 model and has advanced features for reliable performance.
Each transmitter has its own digital code, which is learned by the receiver during binding. This allows a single transmitter to control unlimited receivers.
🔐 TX Code Compatibility
If you already use a B1 transmitter, you can send your B1 code, and I’ll program your B2 with the same code. This way, both transmitters work without re-binding your receivers.
* Max transmission time is 30 seconds. Release and press again to continue.
🧷 Button Protection Ring
The 3D-printed ring helps prevent accidental presses. You can glue it around the button using UHU Por or similar contact adhesive.
🔋 Charging the Battery
The onboard Li-Po battery lasts for around 10,000 DT presses. A low-battery warning tone will play between transmissions, still allowing ~200 more DTs.
Charge with any standard micro USB cable (not included). Charging takes ~1.5 hours from empty. The LED turns off when fully charged.
* For storage, keep the battery under 80% charge. Avoid topping up the charge after a flying day.
📦 Package Includes
- 1× B2 Transmitter
- 1× Antenna
- 1× Button Protection Ring
⚙️ Features
- Weight: 50 g
- Dimensions: 75 × 50 × 20 mm
- Battery life: ~1.5 hours continuous / 10,000 DTs
- Low battery warning: <3.3 V (flashing LED + buzzer tone)
❓ Troubleshooting
- LED blinks fast + buzzer beeps alternately: Battery is low — charge it.
- No response from device: Try connecting a USB cable and pressing the button. If still no sign of life, the button may have failed — contact me.