RPM Stability:<±0.25% 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 ENVIRONMENT: Working Humidity Range:Maximum 95% Environment Temprature:-15 ~ 55 °C Shocking:25HZ 2mm INPUT POWER SUPPLY: Voltage: 12 or 24V DC Grounding Pole:Negative pole Power Supply:Negative pole Actuator Continuous Current: Maximum 2.5A insulating strength:≥500MΩ