1. SPECIFICATION:

Power source	110/220VAC/24VDC
Power	3W
Contact capacity	SPDT 250VAC/ 10A
Speed	1 rpm
Insulation V.	1500V in 1 minute
Specific gravity	>=0.5g/cm3
Torque	0.3~1Nm

2. PRINCIPLE

A unit is usually located through a bin wall at the top, middle or low level of a bin. During normal operation (no material present) a synchronous motor rotates the paddle at 1 RPM. When this paddle rotation is impeded by material, surrounding the paddle, motor will stall and cause the Micro switch to change state. (Indicating an alarm or control)