Operating voltage:DC4.5V-6V
Consumption current:<20mA@4.8V
Direct detection of engine rotation speed.
Speed control range:10500~21000RPM
Operating temperature range:-20C~60C
Operating moisture range:0%~95%
Servo RWM output pulse width: 1-2mS/50Hz  (not apply to 760us devices such as 9251, 9256, BL251)
Case size(body):28x26x9.5mm
Signal wire length:160mm
Sensor wire length:250mm
Weight:9g(including wires)

Compact design, easy use, simple setting with great speed control performance.
Speed resolution: 0.1RPM
Speed stability accuracy: within 1%(Steady State)

RPM Magnet x 2(4x1.5mm)
Socket button head screw x 2(T2.6x6mm)
Nut x 1