The MicroViper Loco is a miniature 10A fwd/rev brushed speed controller designed specifically for model rail. It has a small footprint and features motor short protection, motor stall protection, adjustable reverse including reverse disable, built in cruise control, which holds the speed steady when signal is lost.

Weight (without connectors):	23 g
Max Continuous Current:	10 A
Max BEC Output:	1.2A at 5V
Max Working Voltage:	14.8 V
Size:	26 x 26 x 9 mm

Viper speed controllers are designed for use with NiCd, NiMH or Lead Acid batteries, they do not have a low voltage cutoff.

Download the Viper MicroLoco user manual.

The Viper Marine20 is a fwd/rev brushed speed controller designed specifically for use in R/C model boats. It is very easy to setup and is fully waterproof.

Weight (without connectors):	55 g
Max Continuous Current:	20 A
Max BEC Output:	1.2A at 5V
Max Working Voltage:	12 V
Size:	39 x 34 x 13 mm

Viper speed controllers are designed for use with NiCd, NiMH or Lead Acid batteries, they do not have a low voltage cutoff. The ESC has protection from motor shorts and over-temperature.

Download the Viper Marine user manual.

The Micro Loco 10 HV is designed for use in R/C locos with battery voltage of 12V to 24V. Features include cruise control, 2A BEC, motor stall protection and selectable fwd/rev or fwd only.

Weight (without connectors):	75 g
Max Continuous Current:	10 A
Max BEC Output:	2A at 5V
Max Working Voltage:	24 V
Size:	60 x 37 x 13 mm

The Viper HV controllers are designed for use with NiCd, NiMH, Lead Acid or Lithium Polymer batteries. The ESC detects the number of LiPo cells at start-up and implements a motor cut-off at 3V per cell. The ESC has protection from motor shorts and over-temperature.

Download the Viper Loco 10HV user manual.