1. Compatible With Brushless Motors With Hall And Without Hall, Automatic Identification Of Sensory And Non-Sensory Drives, No Need To Set 2. Speed Regulation Mode: Support Open-Loop Speed Regulation And Controller Closed-Loop Speed Regulation, Set By Dial Switch. 3. Speed Regulation Mode: Modbus Rtu 485 Communication Control, External Potentiometer/Analog Signal/Pwm/Aircraft Model Pwm/Joystick Control, Internal Potentiometer Control. Support Long-Term Stalling Without Burning The Motor And Controller, Support Stalling Alarm, How Long Does The Stalling Last? 4. Supports Enabling, Reversing, And Emergency Control; The Control Interface Is Compatible With Active Control (Maximum 24v) And Passive Control. Supports A Maximum Speed Of 110000rpm (1 Pole Pair Motor). 5. Programmable Output Interface: Support Alarm Signal/Commutation (Speed) Pulse/Stop Signal/Communication Control Output, The Output Signal Is 3.3V Level Signal. Support Phase Sequence Learning, Motor And Controller Automatic Adaptation. Depending on the batch, the appearance, color, and printing of the product , which does not affect use. Product Name: Brushless Motor Driver Board Controller Size: Motherboard Size: About 118 x 64 x 25mm, Installation Hole Diameter: About 4x4mm Brushless Motor: 9V-36V Colour:green Material:PCB Package Contents: 1 x Driver Board Controller Motherboard Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.