This is the Thunderbird 54 Brushless Aircraft Speed Control.
Not recommended for use in helicopters.
Castle Creations recommends their Phoenix series of ESCs for heli use.
FEATURES: Easy to use
Advanced automatic software features
Rugged Surface Mount Technology hardware
Simplified programming steps
Auto-LiPo and No Brake for 3D action right from the package
Universal Rx connector
Programmimg features: Brake ON/OFF
LiPo, NiMH, NiCd and cutoff
One year warranty
INCLUDES: One Thunderbird 54 Brushless Speed Control
REQUIRES: Connecting to motor, battery and receiver
SPECS: Max amps: 54A
Max volts: 15V, 3S LiPo, 10 NiCd/NiMH
BEC: Linear regulator, 3A max
Length: 2" (51mm)
Width: 1.15" (29mm)
Height: .04" (10mm)
Weight: 1.2oz (34g)