测试时间、测试电流、接地电阻同时显示 At the same time display test time、test time、grounding resistance * 测试时间可任意设置 Test time arbitrarily set * 测试报警值可连续任意设定 Test warning value may continue positing * 选配遥控测试枪操作方便、快捷 Handling facilitate & quick if choice of distance control test gun * 声光报警 Sound & light warning