1. Anti-tilt safety lock: it can lock the safety rope when the working gondola cradle tilting angle is over 3。-8。 or the lifting steel tope is broken.
2. Manual glide down: ensure operators to reach the ground safely when the electric power is suddenly off.
3. Speed limiter: when the descending speed is greater than the safety speed, the centrifugal reducer can slow down the speed.
4. Limit switch: automatically cut off the power and start the alarm when the position of working platform is higher than the limit.
5. Overload protection: if the motor hoist is overload due to electric circuit is abnormal, it can cut the power.
6. Leakage protection: it can cut the main circuit if there is in leaked condition.
7. Emergency stop: stop the electric hanging working cradle in case of sudden.
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