Specifications
1. power supply:220-690v;50/60hz
2. esay to install
3. immediatly protection
4.record overload times
5.record working time
1. warning function: when the load over 90% rated weight, will show the low frequncy sound and light alarm.
2. Alarm funciotn: wehn the load over100% rated weight, will show the high frequncy sound and light alarm. If the delay time (which can be manually set) still not eliminate alarm, it automatically disconnect up circuit, banned the ascension movement, also issued keep alarm sound and alarm for high frequency flashing lights.
3.immediatly protection:When the load over 110% rated weight, disconnect rose circuit instantly, banned the ascension movement, also issued alarm sound and keep high frequency flashing alarm indicator.
4.overload times record: crane in normal work, record the number of overload times.
5. record the total work time