Vaisala vNet Power over Ethernet (PoE) Data Logger Interface


  • Eliminates the cost of wiring AC power to each monitored point.
  • Data loggers can be installed wherever a LAN cable can be run.
  • Increased data communication protection from power outage because the server room’s UPS can provide backup power
  • Plug and Play connectivity when using viewLinc Aware function.

Dpstar is a leading supplier of environmental measurement sensors for temperature, relative humidity, pressure, dew point, CO2, and other environmental condition monitoring for industrial process application and research. Since the ’90s, we earned a reputation as a trusted partner to our clients through our commitment and dedication. We are an authorized distributor and supplier of measuring sensors solutions from renowned manufacturers Vaisala. Vaisala is a global leader in environmental and industrial measurement. Building on 80 years of experience, Vaisala provides observations for a better world. Vaisala is a reliable partner for customers around the world, offering a comprehensive range of innovative observation and measurement products and services.

Companies are increasingly turning to Vaisala Power over Ethernet (PoE) devices for reliable network communications and cost savings. Vaisala vNet PoE network interface provides easy connectivity with Vaisala DL series data loggers at a lower cost compared to other networking devices. Its snap-in design simplifies data logger connection, reducing wires between separate data loggers and Vaisala PoE devices. With power and data transmitted over the same cable, there’s no need for an AC power source, further cutting installation costs.

Vaisala vNet PoE integrates VL and SP data loggers without compromising their high accuracy, offering greater flexibility and simplicity in deploying the Vaisala Continuous Monitoring system. Vaisala viewLinc Aware function in the viewLinc monitoring software makes configuring data loggers quick and easy, whether setting up individual loggers or multiple units at once. Simply place the data loggers in a Vaisala vNet cradle, connect to a Local Area Network, and Vaisala viewLinc automatically discovers and configures the devices.

Vaisala vNet PoE interface comes in four models:

  • CDL-VNET-P with a fan inside the cradle for data loggers with an internal temperature channel.
  • CDL-VNET-LP without a fan for data loggers without an internal temperature channel.
  • CDL-VNET-PC with 15 V output to power external sensors and transmitters; includes internal fan
  • CDL-VNET-LPC with 15 V output to power external sensors and transmitters; without internal fan

There is also an option to power the interface with AC. Select the model that fits your application to monitor and record temperature, humidity, CO2, differential pressure, door switches, and many other parameters.


Measurement Performance 
Heating effect on measurements
CDL-VNET-P and CDL-VNET-PC Temperature rise from electronics (important only for data loggers with internal sensors): < 0.05 °C as seen by the data logger sensor
CDL-VNET-LP and CDL-VNET-LPC Not to be used for data loggers with internal sensors
Operating Environment
Operating temperature −25 … +70 °C (−13 … +158 °F)
Storage temperature −40 … +85 °C (−40 … +185 °F)
Operating humidity 0 … 90 %RH (non-condensing and not to exceed a mixing ratio of 38.5 g/kg)
Inputs And Outputs 
Ethernet connectivity IEEE 802.3af (Class 1) 1), bandwidth 10Base-T
Connectivity cable Category 5/5e
RJ-45 connector
1.83 m (6 ft)
Operating voltage 2) 12 … 30 VDC
Plugs into vNet jack labeled 12 V
Output voltage
CDL-VNET-P and CDL-VNET-LP Not available
Maximum: 350 mW
Power Consumption
CDL-VNET-P and CDL-VNET-LP Typical: 625 mW
Maximum: 700 mW
CDL-VNET-PC and CDL-VNET-LPC Typical: 900 mW
Maximum: 1.35 W
Power Supply 3)
North America 12 VDC / 0.5 A max. out
120 VAC in
International 12 VDC / 1.66 A max. out
100 … 240 VAC in
1) Max. PSE power reservation is 4.00 W.
2) Optional for use without PoE.
3) Included but not required when using PoE.
Mechanical Specifications
Dimensions (H × W × L) 43 × 102 × 102 mm (1.7 × 4.0 × 4.0 in)
Weight 180 g (6.3 oz)
General Specifications 
Data logger compatibility v6.00 hardware and higher
Includes models VL and SP 1000, 1700, 1200, 1016, 1416, 1400, 2000, 4000
LED indicators Link, activity, power, data logger communications
Device configuration HTTP Web Interface
PC-based configuration wizard
viewLinc Aware Requires one vNet to be programmed with the viewLinc server IP address. Other vNets on the subnet will automatically self-configure.
Addressing DHCP/RARP
Static IP for IP address assignment
Net BIOS name
Firmware Field upgradable firmware
Emissions/Immunity FCC Part 15 and CE
EN 50581:2012
EN 55032:2012/AC:2013 Class B
EN 61326-1:2013
Conformity RoHs, 2011/65/EU


Vaisala VNet Power Over Ethernet (PoE) Data Logger Interface_DpstarGroup