Model Number: ESD5111 name: speed controller ESD5111 engine speed regulator RPM stability: Less than ± 0. 25% Speed range: 1 KHz ~ 7.5 KHz Thermal stability: Max ± 1% IDLE Regulation: 160 ± 20Hz DROOP Regulation: 15Hz ± 6Hz / Amp minimum Maximum: 400Hz ± 75Hz / Amp External speed regulation: ± 200Hz (with 1 K ohm connected) Auxiliary input sensitivity: 148Hz / 1V, ± 10Hz Impedance: 1M ohm Working temperature range: -40-85 Environment: Working humidity range: maximum 95% Average temperature: -55-92 Celsius Shocking: 20-100 HZ 500mm / sec. Input power supply Voltage: 12/24 V Ground post: negative post Power supply: 50mA Continuous Actuator Current: Minimum 2.5A, maximum 10A Signal: 0.5-120 RMS The following are our products:1 AVR Brushless Universal: 8A ... 12A ... 15A ... SAVRH-75A ... SAVRH-PCB ... 2Stamford AVR: AS440 ... MX321 ... MX321-A ... MX341 ... MX341-A ... SX440 ... SX440-A ... SX440-T ... SX460 ... SX460-A . 3AVR: R230, R438, R448 ... R449 ... SSAYEC432. 4AVR: SE350. 5 AVR Brush: -100, -110.-130B ... -120.-160B.-170 6 Governor motor: 3036453 of 34008326 EFC3044196 ... ESD5111 ... ESD5500E! 7 Controller: CTR101 ... CTR168 ... DSE501K ... DSE5110 colour:Picture color Material:Plastic + metal Package Contents: 3 x ESD5111 Governor Note: the above parameters are tested with an operating frequency of 4000Hz Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.