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BMK E20 Motor & Band Burner Timer

Regular price £14.90

US-Canada Notice  US & Canada Customers: This product is also available at J&H Aerospace US

BMK E20 Timer + Band Burner is a compact and efficient standalone motor timer and DT (dethermaliser) solution designed for E20 class electric models and similar small builds.

It combines two independent timers on a single board—one for the motor and one for a DT band burner. JST 1.25mm battery and motor connectors offer a plug-and-play experience, though you may remove them to save weight with fine soldering.

✨ 2023 Black Version – Extra Features

  • DT timer now configurable in 10-second increments (previously 1s)
  • Motor braking feature to reduce prop drag after cut-off
  • Audible beeping signal to help locate model in long grass
  • Offset connectors suitable for stick-type batteries
  • Lightweight 1.2mm PCB for reduced weight

📄 Download Manual

BMK E20 Manual

▶️ Demo Videos


This timer is ultra-efficient and can remain in idle mode for up to 42 days on a 100mAh LiPo battery.

Band Burner Heater

The included Ni-Chrome heater reaches red-hot temperatures with just 1000mA of current. You can also remove the heater and install a DT motor if preferred.

Recommended silicone elastic bands:


E20 Timer Wiring Diagram

⚙️ Features

  • Weight: 1.6g
  • Dimensions: 31mm × 12mm × 5mm
  • Max Motor Timer Duration: 60 seconds
  • Max DT Timer Duration: 2500 seconds (41 minutes)
  • Timer Steps: 1 second (motor), 10 seconds (DT)
  • Timer Tolerance: ±1% typical
  • Activation: Hold onboard button for 2 seconds; release to start timer
  • Cancel Timer: Click the onboard button
  • Motor Ramp: 0.3 seconds (1.0s for units made before 10/09/2021)
  • Operating Voltage: 3.0 – 5.0V (1S LiPo compatible)
  • Power Consumption: 0.06mA (idle), 0.6mA (countdown), 1000mA (burning, 2s)
  • Max Output Current: 5A continuous
  • Low Battery Warning: <3.7V (double LED flash in idle mode)