PWM Width & Frequency Display For RC Models Flight Controller Servo Tester Receiver

PWM Width & Frequency Display With Alarm For Flight Controller Servo Tester Receiver Description: Item Name: PWM Width & Frequency Display Weight: About 20g Reading Error: 1s Input Voltage: 5V or 3.7V Features: Built-in buzzer,it will alarm when PWM is lower than 970 (or no signal) Accurate reading,display update fast. 70ms without signal will display reset(clear). Can test the flight controller PWM width and frequency,servo tester and receiver output,the transmitter pull distance test and the propeller speed (Infrared distance sensor required). Package Included: 1x PWM Width & Frequency Display