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RS-232 is a communications standard for serial communications between devices. In CCTV, this can be communication between a controller and a surveillance camera. The RS-232 standard allows for the connection of two devices through a serial l...

Only applied to the scene where the targets are sparse and there is rarely any covering between targets, such as the perimeter without any guard. It will trigger alarm when the target passes through the warning line according to the set move...

Also known as Sub-GHz is a wireless technology using IQRF for wireless packet-oriented communication via radio frequency that is used in Access Control Systems. It transfer frequencies between 27MHz-960 MHz, most commonly used are 433MHz and...

In November 2012, Dahua technology released analog high-definition transmission interface technology-HDCVI(High Definition Composite Video Interface), with self-owned intellectual property right. HDCVI technology is a HD video transmissi...

A Video Balun enables the transmission of video using unshielded twisted pair wire instead of coaxial cable. The word "balun" comes from combining the terms balanced and unbalanced. The function of a balun is to transform an unbalanced signa...