XL-1 rotary type level display is made use of micro-motor drive means connected with the clutch shaft, when not in the contact material, the normal operation of the motor, when the blade contact material, the motor is stopped, outputs a contact signal detection means, cut off the power supply stops. When the blade material decline suffered loss of resistance, detection device rely torsion spring returns to its original state. The proportion of materials for different size can be adjusted torque. XL-1 rotary type level display main technical parameters: contact capacity contact angle structure of the number of actions in the form of insulation voltage insulation resistance weight AC250V 2A 1 normally open or a normally closed universal 20 ~ 35 ° hanging AC1000V test one minute ≤20 Omega 1.5kg