2PCS HJ Digital Servo Tester ESC Consistency Speed Controller for RC Helicopter Airplane Car Motor Throttle Display

About This Product :

• 4CH tester servo: It can control 4 servos at the same time
• Buttons function:S-1 manual mode (Manual), S-2-bit mode (Neutral), S-3 automatic mode (Automatic) Keys pulse width
• Input voltage: DC5-6V
• How to email us? Please click “Dragino”(you can find Sold by Dragino under Buy Now button), in the new page, click “Ask a question” to email us