Detailed Description  Cummins Speed Controller  P/N:3044196 others provided as follows : P/N: 3037359 , 3044195  3062322, 3032733  3298693  Electronic fuel control(EFC) SPECIFICATION:  RPM Stability: Speed Range: 1KHz ~ 6.5KHz Thermal stability: Max ±0.7% IDLE Regulation: 260 ±20Hz DROOP Regulation: Minimum 15Hz ±6Hz/ 1 Amp  Maximum: 400Hz ±75Hz/ 1 Amp External Speed Regulation: ±200Hz (with 1 KΩ connected) AUX Input Sensitivity: 148Hz / 1V., ±10Hz Impedance: 1MΩ Working Temp Range: -40 ~ 85 ENVIRONMENT: Working Humidity Range: Maximum 95% Stocking Temp: -55 ~ 92 Shocking: 20-100HZ 500mm/Sec. INPUT POWER SUPPLY Voltage: 12V or 24V Grounding Pole: Negative pole Power Supply: 40mA Actuator Continuous Current: Minimum 1A, Maximum 4.5A MPU  Signal: 2 ~ 120V RMS NOTE: Above-Mentioned parameters are tested with a 3800Hz working frequency.