This is the C-55 Mini High Frequency Electronic Speed Control w/BEC. For aircraft requiring high current with 500 or 600 size Brushed Motors requiring 50A or less. FEATURES: Compact size to minimize weight and simplify installation Programmable battery types Automatic temperature protection reduces max throttle to 70% when max temperature is reached "Safe-Start" system prevents accidental motor starts by disabling the motor circuitry until throttle stick is moved to full throttle, then to the OFF position Factory installed radio, motor and battery connectors Fully proportional forward with brake Battery Eliminator Circuitry provides sufficient power for the receiver and three standard servos. The motor battery powers the receiver and servos. When voltage is reduced to the appropriate value, the Low Voltage cut-off circuitry stops the motor while continuing to supply power to the receiver and servos. Solid-state current overload limiter Built-in thermal shutdown protection drops throttle to 70% if transistors overheat Reverse-polarity protection High Frequency to optimize battery run-time and cool operation ON/OFF radio switch and set-up LED light 180 day limited warranty INCLUDES: One C-55 Mini Electronic Speed Control with Universal receiver plug installed, installed motor wires with 4mm gold plated Female Bullet Connectors, Deans Ultra Male Battery Connector and an ON/OFF switch Three ceramic capacitors to reduce motor noise One 2.75" piece of shrink tubing One instruction sheet REQUIRES: Attaching to motor and setting up speed control Battery pack Plug Universal plug into the throttle channel on the receiver SPECS: Length: 1.42" (36mm) Width: .71" (18mm) Height: .43" (11mm) Weight: 1.22oz (35g) with wires Input: 6-12 NiCd/NiMH cells; 2-4 LiPo cells Max Rated Current: 50A continuous BEC Voltage: 5V/1.5A Low Voltage Cutoff: 0.80V per cell for NiCd/NiMH 2.75V per cell for LiPo Connectors: Universal radio connector, Deans Ultra Male Connector, 4mm gold plated Female Bullet Connectors Switching Frequency: 1.3kHz Motor Size: Speed 500 and 600 Brushed only COMMENTS: Motor wires are White (Positive) and Blue (Ground) Do not use with Brushless motors jxs 6/13/05 ir/jxs