Dahua power supplies

Power supply 53Volt/1.8Amp for Dahua NVR 4 and 8 channel with PoE versions. Always check the current power supply for correct specifications.  General  nutrition  100-240VAC 3A    Assembly -    Power output  53VDC, 1.8A   Adapter plug size 6x4.3mm   Included Adapter, Power cord  

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Dahua VTNS2003B-2 Two-wire switch  The VTNS2003B-2 is a switch for products from the new generation of Dahua Video Intercom products. The communication of this generation of video intercom products uses the SIP protocol. This protocol ensures a good speaking-listening connection and offers options for integration with third parties. The 2-wire technology simplifies installation and offers the ability to connect multiple posts to one cable. Pros: Multiple devices on one 2-wire connection: With this generation it is possible to connect multiple products in series via the "out" port. The switches can also be connected to each other via 2 wires. Each switch must be separately supplied with 48VDC.  2 wires for one system: Both the power supply for the indoor and outdoor stations and the data transmission go through the same cable. The posts can be placed in one line, making 2 wires sufficient for a working system. TCP-IP network protocol: Despite the 2-wire technology, the stations work just like regular network products. This means that each post must have its own unique IP address. The major advantage of this is that posts connected to this 2-wire switch can be combined with the PoE products and the 2-wire products from the previous generation.  Suitable for DMSS and DSS Pro: Because the 2-wire products are simply part of the network, they can also be used with the DMSS app or DSS Pro management software Points of attention: Not suitable for all 2-wire products: This switch is not suitable for all Dahua 2-wire intercom products. Products from older generations are not supported by this switch Maximum 2 outdoor stations per switch: A maximum of 2 VTO outdoor stations can be connected per switch. If there are more outposts, they must be connected to the next switch. The switches can be linked together Maximum 2 extensions per VTH internal station: A maximum of 2 additional extensions can be added to a VTH indoor unit. If there are more than one, it is recommended to connect the VTH to each other via a PoE switch.  VTNS2003-B  For 6 devices or less, a 48VDC power supply of 1.25A is sufficient For 6 to 22 devices, a 48VDC power supply of 5A is recommended.   Advice Recommended cabling: 4x0.5mm² with a maximum resistance of 4Ω per 100 meters. Maximum distance 50 meters  2x0.5mm² with a maximum resistance of 3.9Ω or less per 100 meters. Maximum distance 50 meters  UTP Cat5e 0.45mm with a maximum resistance of 12Ω per 100 meters. Maximum distance with 6 VTH is 50 meters, with 12 VTH this is 30 meters. Lock control by external power supply: In theory, the power supply and control of locks and doors could also be done from the switch. However, this can have a negative effect on the operation and mutual communication of the indoor and outdoor stations and is therefore not recommended.   

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ADS-65KSI-52-1 power supply 48Volt/1.25Amp for Dahua NVR/Intercom, including the NVR21/41XX series and VTNS2003B-2 2-wire switch intercom Dahua. Always check the specifications of your current power supply. General  nutrition  100-240VAC 2.8A    Assembly -    Power output  48VDC 1.25A   Adapter plug size 6x4.3mm   Included Adapter, Power cord  

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Plug-in power supply 12 volts 1 ampere for cameras, intercom outdoor stations, indoor stations, etc.This switching power supply converts 230V AC to 12V DC. The maximum current that this power supply can supply is 1Amp. DC Plug 5.5mm x 2.1mm, cable length approx. 1.50m.      

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