The MS-1.5A servo is developed independently by Makeblock. Its dimensions are similar to common 9g servos. Specifications With the latest technology in the servo industry, the MS-1.5 servo provides significantly improved performance. The following describes its specifications. Electrical specifications (performance parameters) Item 4.6 V 6.0 V Operating speed (without load) 0.11 ± 0.01 sec/60° 0.10 ± 0.01 sec/60° Operating current (without load) 270 mA ± 50 mA 380 mA ± 50 mA Stall torque (when locked) 1.5 kg ± 0.30 kg·cm 1.8 kg ± 0.30 kg·cm Stall current (when locked) 1200 mA ± 50 mA 1500 mA ± 70 mA Idle current (when stopped) 4 mA ± 1 mA 4 mA ± 1 mA Service life (without load) gt; 180 thousand times gt; 150 thousand times Note: The servo operates without load when the average value of item 2 is defined. Mechanical specifications Item Specification Overall dimensions See “Dimensions.” Limit angle No Weight Subject to the actual weight Wire specification JST 2.54mm #30 PVC black-white-red Wire length 260 ± 5 mm (connectors not included) Horn specification 20T Horn type N/A Excessive play ≤ 1° Control specifications Item Specification Control system N/A Amplifier type N/A Operating travel 180°± 5° (500 to 2500 µ sec) Left-right travelling angle deviation ≤ 5° Centering deviation ≤ 1° Neutral position N/A Dead band width N/A Rotating direction Counterclockwise (500 to 2500 µ sec) Pulse width range 500 to 2500 µ sec Maximum travel About 180° (500 to 2500 µ sec)