HIKVISION DS-K3G501 Quick Start Manual page 2

B、 推荐拆卸工具，如下图。
B. The disassembly tool is recommended, as shown below.
二、拆卸 Disassemble
第一步：拆卸滚杆。
Step 1: Remove the roller rod.
1.1 用一字螺丝刀撬开圆盘上的装饰盖。
1.1 Use a flat-blade screwdriver to pry off the decorative cover.