The DKG-253 is a low cost electronic governor control unit designed to control the engine speed with fast and accurate response to load changes. The unit is housed in a metallic chassis and consists of a single enamel coated printed circuit board for reliable operation in harsh automotive environment. The unit features an adjustable internal overspeed alarm relay with indicating led. This relay provides supplementary speed protection in case of speed control failure. The DKG-253 connects to a forward acting proportional electric actuator and a magnetic speed sensor. It is able to control a wide variety of engines in constant speed (isochronous) or droop modes. An external speed trim potentiometer may be connected to the unit to adjust the engine speed from a remote location. The unit is capable to deliver actuator currents as high as 10 Amps. However the output current limiting circuit will protect the unit against output short circuits. Protection against reverse battery connection and transient voltages are provided. FEATURES: 12 and 24V operation Capable of governing various engines Forward acting actuator output Fast and accurate response Starting fuel adjustment Speed ramp adjustment Overspeed alarm output Adjustable rated and idle speeds Isochronous and droop operation Gain and stability adjustments External speed adjustment capability Synchronizing and load sharing input Switchmode output circuit 10 Amps continuous current output Speed sensor failure detection Battery reverse voltage protection Output short circuit protection Rugged design Enamel protected electronic circuit. TECHNICAL SPECIFICATIONS: DC Supply Range: 10.0 to 33.0 V-DC Current consumption: 100mA max (actuator not connected) Speed input range: 500 Hz to 8000 Hz. Speed signal amplitude: 1 to 35VAC-RMS Speed signal input impedance: 10 K- ohms External speed trim: 5 K-ohms trimpot between terminals G and J External speed trim range: ± 6% min @3000Hz Auxiliary input (terminal N): Input voltage range: 0 to 10VDC Input impedance: 1M ohms. Adjustment range: ±25% min @3000 Hz Steady state speed accuracy: ±0.25% Droop adjustment range: 1 to 5% minimum Actuator output: 10 Amps continuous max Overspeed alarm relay output: 10 Amps @ 28VDC Alarm reset input: 0 to 40VDC. DC supply output: 10 volts DC, 20mA max Operating temp.: -20°C (-4°F) to 70 °C (158°F). Storage temp.: -30°C (-22°F) to 80 °C (176°F). Maximum humidity: 95% non-condensing. Dimensions: 130 x 110 x 27 mm (WxHxD) Weight: 350 g (approx.) Mounting: any position, vertical preferred WE DO NOT SHIP THIS PRODUCT TO USA AND CANADA