Electronic fence: The main function 1, with a complete, clear demarcation of high-voltage pulse electronic fence, electrostatic induction fence, with a strong blocking effect and deterrent. 2, with a very low false alarm rate of smart alarm function. 3, with alarm interface monitoring maintenance of the manufacturers, the camera can be linked with other security system monitoring maintenance, improve security level of the system. DVR can not control PTZ possible reasons: 1. do with BNC output, N and PAL format selection is not correct, the image becomes black and white 2. DVR and monitor impedance mismatch 3. The video transmission distance is too far or video transmission line attenuation too 4. DVR color, brightness, etc. are not set correctly a few minutes after starting the DVR will automatically reboot or frequent crashes DVR can not control PTZ possible reasons: 1. The input voltage is unstable or too low 2. jumpers Incorrect 3. Hard disk has bad bad enough power switching power supply 4. 5. 6. heat front-end video signal instability or bad sectors hard line, too much dust, the machine is too harsh operating environment monitor how much maintenance | Source Maintenance ( Certified) | Monitoring maintenance provided by Zhengzhou source maintenance Electronic Technology Co., Zhengzhou source maintenance Electronic Technology Co., Ltd. (www.hnxywb.com) is a leader in Zhengzhou, integrated monitoring system, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In leading source maintenance staff warmly welcome all inquiries negotiations to create a better source of future maintenance.