This is a tester which could monitor and adjust the signal from servo, and could be functioned as throttle for Electric Speed Controller. Furthermore, this device could detect the servo centre point and ADJ from Transmitter to Receiver. A great multi function product.
Instruction： Connect a 5VBattery as input power. Monitor the servo PWM signal output，the signal from the lowest(1.00mS) up to (2.00mS)。 This device could function as throttle to control ESC or as a SEVRO Adjuster (at this time the LED will show in Red color). Detect the PWM signal from receiver and display on the LED, the range from 0.70mS ~ 2.40mS, over the range will show as“- - -”。At this time a Green LED showed。 Note：When Green LED is on, it can not monitor the servo PWM at the same time.