求翻译：固定电话骚扰电话过多可使用本产品，本产品可存储500个电话黑名单，当这些电话来电时，设备自动挂断来电。本设备无需外接电源。是什么意思？

Harassing phone calls over the fixed telephone can use this product, this product can store 500 phone blacklist, when these phone calls, the device automatically hang up incoming calls. The devices do not need an external power supply.

Fixed-line telephone telephone harassment, excessive use of the products This product can be stored 500 telephone black list, and when these telephone calls, the device automatically hang up calls. This equipment external power supply.

The fixed telephone harassment telephone excessively are many may use this product, this product may save 500 telephone blacklists, when these telephones come the electricity, the equipment hangs up the electricity automatically.This equipment does not need the external power supply.

Too many fixed telephone harassing phone calls can use this product, this product can be stored 500 calls a black list, when these phone calls, equipment Automatic hangup incoming call. This device without additional power supply.

Harassing phone calls over the fixed telephone can use this product, this product can store 500 phone blacklist, when these phone calls, the device automatically hang up incoming calls. The devices do not need an external power supply.