Throttle control unit APR1-M-HC

for aircraft

Overview
APR1 is the automatic propeller controller that enables Single‑Lever Engine operation by managing propeller RPM automatically. The pilot commands thrust with the throttle lever while APR1 adjusts RPM across flight phases to maintain requested performance and protection limits.

Available versions
APR1 is offered in four versions: M-LC (Map Low Current) M-HC (Map High Current), MLCJ12 (for Jihostroj governor) and APR1EPR (for E-PROPS propellers). M versions integrate a MAP sensor to limit engine torque according to manufacturer settings.

Main features

• Automatic propeller controller enabling single‑lever operation for simplified flight management
• Sunlight-readable colour display with automatic brightness control
• 32-bit microcontroller and solid-state sensors for precise RPM regulation
• Output current up to 20 A with short-circuit protection in automatic mode
• Universal design compatible with many engines (including Rotax iS series) and all propeller types

Included gauges

• Airspeed sensor
• MAP sensor (M versions only)
• Light sensor

Interfaces

• Knob with pushbutton
• Auto/Manu switch
• Inc/Dec switch
• 1 digital remote control input
• 1 analog remote control input
• 3 CAN bus ports
• 2 RS232 serial ports
• USB 2.0 port

Manufacturing

• Rugged case machined from solid aluminium
• Powder-painted finish
• Fully manufactured and tested with automated processes

What is included

• APR1 instrument
• Printed user manual (English)
• M4×10 mm screws
• 120 Ω resistor
• Packing list

Optional accessories

• USB extender cable 0.5 m (code 604010)

Notes
Special variants exist for electric propellers and for Jihostroj governors. M versions include a MAP sensor and additional engine protection features.

Technical specifications

• Colour graphic LCD with 1000 nits backlight
• Standard mounting: 2-1/4", 57 mm
• Powder-painted aluminium case
• Dimensions: 60 × 60 × 60 mm
• Weight: 235 g
• Supply voltage: 10–30 V
• Output current: up to 20 A (with short-circuit protection)
• Communication: 3 CAN bus ports
• USB: USB 2.0 port