Fangrui Product Details Fangrui Product Details Fangrui Product Details Controller Input Pulse Width Is 0.8ms--2.2ms, 1.5ms Is The Midpoint. The Switch Ubec 5v 3a Can Drive Two 25kg Servos. It Is Not A 7805 Linear Regulator, So Two Escs Cannot Be Used To Power The Receiver At The Same Time. After Power-on, The Led Indicator Flashes Slowly For 3 Times For Self-test, And The Steady Light After Self-test Means Normal Operation. If The Throttle Is Not In The Middle Position When Power-on, The Led Will Flash Intermittently. Then You Need To Adjust The Throttle Position To The Middle Point And The Esc Can Work Only When The Led Is On . If The Throttle Signal Is Lost And The Led Flashes Quickly, The Motor Will Stop. Note: If One Receiver Uses Two Escs At The Same Time, You Need To Cut Off The Red Positive Wire In The Middle Of The Bec Signal Wires Of One Esc. One Esc Can Supply Power To The Receiver, And If Two Escs Supply Power To The Receiver At The Same Time, It Will Be Burnt. The Esc Is Not Waterproof. You Need To Do Waterproof By Youself.(apply Glue) Support Forward Ba